Merge branch 'v4-dev' into stretched-link

2025-01-29 21:52:22 +01:00 · 2018-12-22 18:32:28 +02:00 · 2018-12-22 18:32:28 +02:00 · 74a2d93517
commit 74a2d93517
parent f0e5cc3f41 dee3ab427c
338 changed files with 1893 additions and 1133 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,7 +1,7 @@
 # Ignore docs files
 _gh_pages
 _site
-site/docs/4.1/dist/
+site/docs/**/dist/

 # Ignore ruby files
 .ruby-version
--- a/Gemfile.lock
+++ b/Gemfile.lock
@ -4,7 +4,7 @@ GEM
    addressable (2.5.2)
      public_suffix (>= 2.0.2, < 4.0)
    colorator (1.1.0)
-    concurrent-ruby (1.1.3)
+    concurrent-ruby (1.1.4)
    em-websocket (0.5.1)
      eventmachine (>= 0.12.9)
      http_parser.rb (~> 0.6.0)
@ -46,17 +46,17 @@ GEM
      rb-inotify (~> 0.9, >= 0.9.7)
      ruby_dep (~> 1.2)
    mercenary (0.3.6)
-    mini_portile2 (2.3.0)
-    nokogiri (1.8.5)
-      mini_portile2 (~> 2.3.0)
-    nokogiri (1.8.5-x64-mingw32)
-      mini_portile2 (~> 2.3.0)
+    mini_portile2 (2.4.0)
+    nokogiri (1.9.0)
+      mini_portile2 (~> 2.4.0)
+    nokogiri (1.9.0-x64-mingw32)
+      mini_portile2 (~> 2.4.0)
    pathutil (0.16.2)
      forwardable-extended (~> 2.6)
    public_suffix (3.0.3)
    rb-fsevent (0.10.3)
-    rb-inotify (0.9.10)
-      ffi (>= 0.5.0, < 2)
+    rb-inotify (0.10.0)
+      ffi (~> 1.0)
    rouge (3.3.0)
    ruby_dep (1.5.0)
    safe_yaml (1.0.4)
@ -79,4 +79,4 @@ DEPENDENCIES
  wdm (~> 0.1.1)

 BUNDLED WITH
-   1.17.1
+   1.17.2
--- a/README.md
+++ b/README.md
@ -1,6 +1,6 @@
 <p align="center">
  <a href="https://getbootstrap.com/">
-    <img src="https://getbootstrap.com/docs/4.1/assets/brand/bootstrap-solid.svg" alt="Bootstrap logo" width=72 height=72>
+    <img src="https://getbootstrap.com/docs/4.2/assets/brand/bootstrap-solid.svg" alt="Bootstrap logo" width=72 height=72>
  </a>

  <h3 align="center">Bootstrap</h3>
@ -8,7 +8,7 @@
  <p align="center">
    Sleek, intuitive, and powerful front-end framework for faster and easier web development.
    <br>
-    <a href="https://getbootstrap.com/docs/4.1/"><strong>Explore Bootstrap docs »</strong></a>
+    <a href="https://getbootstrap.com/docs/4.2/"><strong>Explore Bootstrap docs »</strong></a>
    <br>
    <br>
    <a href="https://github.com/twbs/bootstrap/issues/new?template=bug.md">Report bug</a>
@ -41,14 +41,14 @@

 Several quick start options are available:

- [Download the latest release.](https://github.com/twbs/bootstrap/archive/v4.1.3.zip)
+- [Download the latest release.](https://github.com/twbs/bootstrap/archive/v4.2.1.zip)
 - Clone the repo: `git clone https://github.com/twbs/bootstrap.git`
 - Install with [npm](https://www.npmjs.com/): `npm install bootstrap`
- Install with [yarn](https://yarnpkg.com/): `yarn add bootstrap@4.1.3`
- Install with [Composer](https://getcomposer.org/): `composer require twbs/bootstrap:4.1.3`
+- Install with [yarn](https://yarnpkg.com/): `yarn add bootstrap@4.2.1`
+- Install with [Composer](https://getcomposer.org/): `composer require twbs/bootstrap:4.2.1`
 - Install with [NuGet](https://www.nuget.org/): CSS: `Install-Package bootstrap` Sass: `Install-Package bootstrap.sass`

-Read the [Getting started page](https://getbootstrap.com/docs/4.1/getting-started/introduction/) for information on the framework contents, templates and examples, and more.
+Read the [Getting started page](https://getbootstrap.com/docs/4.2/getting-started/introduction/) for information on the framework contents, templates and examples, and more.


 ## Status
@ -66,6 +66,8 @@ Read the [Getting started page](https://getbootstrap.com/docs/4.1/getting-starte
 [![CSS gzip size](https://img.badgesize.io/twbs/bootstrap/v4-dev/dist/css/bootstrap.min.css?compression=gzip&label=CSS+gzip+size)](https://github.com/twbs/bootstrap/tree/v4-dev/dist/css/bootstrap.min.css)
 [![JS gzip size](https://img.badgesize.io/twbs/bootstrap/v4-dev/dist/js/bootstrap.min.js?compression=gzip&label=JS+gzip+size)](https://github.com/twbs/bootstrap/tree/v4-dev/dist/js/bootstrap.min.js)
 [![BrowserStack Status](https://www.browserstack.com/automate/badge.svg?badge_key=SkxZcStBeExEdVJqQ2hWYnlWckpkNmNEY213SFp6WHFETWk2bGFuY3pCbz0tLXhqbHJsVlZhQnRBdEpod3NLSDMzaHc9PQ==--3d0b75245708616eb93113221beece33e680b229)](https://www.browserstack.com/automate/public-build/SkxZcStBeExEdVJqQ2hWYnlWckpkNmNEY213SFp6WHFETWk2bGFuY3pCbz0tLXhqbHJsVlZhQnRBdEpod3NLSDMzaHc9PQ==--3d0b75245708616eb93113221beece33e680b229)
+[![Backers on Open Collective](https://opencollective.com/bootstrap/backers/badge.svg)](#backers)
+[![Sponsors on Open Collective](https://opencollective.com/bootstrap/sponsors/badge.svg)](#sponsors)


 ## What's included
@ -111,11 +113,11 @@ Have a bug or a feature request? Please first read the [issue guidelines](https:

 Bootstrap's documentation, included in this repo in the root directory, is built with [Jekyll](https://jekyllrb.com/) and publicly hosted on GitHub Pages at <https://getbootstrap.com/>. The docs may also be run locally.

-Documentation search is powered by [Algolia's DocSearch](https://community.algolia.com/docsearch/). Working on our search? Be sure to set `debug: true` in `site/docs/4.1/assets/js/src/search.js` file.
+Documentation search is powered by [Algolia's DocSearch](https://community.algolia.com/docsearch/). Working on our search? Be sure to set `debug: true` in `site/docs/4.2/assets/js/src/search.js` file.

 ### Running documentation locally

-1. Run through the [tooling setup](https://getbootstrap.com/docs/4.1/getting-started/build-tools/#tooling-setup) to install Jekyll (the site builder) and other Ruby dependencies with `bundle install`.
+1. Run through the [tooling setup](https://getbootstrap.com/docs/4.2/getting-started/build-tools/#tooling-setup) to install Jekyll (the site builder) and other Ruby dependencies with `bundle install`.
 2. Run `npm install` to install Node.js dependencies.
 3. Run `npm start` to compile CSS and JavaScript files, generate our docs, and watch for changes.
 4. Open `http://localhost:9001` in your browser, and voilà.
@ -126,7 +128,9 @@ Learn more about using Jekyll by reading its [documentation](https://jekyllrb.co

 - For v2.3.2: <https://getbootstrap.com/2.3.2/>
 - For v3.3.x: <https://getbootstrap.com/docs/3.3/>
+- For v3.4.0: <https://getbootstrap.com/docs/3.4/>
 - For v4.0.x: <https://getbootstrap.com/docs/4.0/>
+- For v4.1.x: <https://getbootstrap.com/docs/4.1/>

 [Previous releases](https://github.com/twbs/bootstrap/releases) and their documentation are also available for download.

@ -181,6 +185,29 @@ See [the Releases section of our GitHub project](https://github.com/twbs/bootstr
 Thanks to [BrowserStack](https://www.browserstack.com/) for providing the infrastructure that allows us to test in real browsers!


+## Backers
+
+Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/bootstrap#backer)]
+
+[![Bakers](https://opencollective.com/bootstrap/backers.svg?width=890)](https://opencollective.com/bootstrap#backers)
+
+
+## Sponsors
+
+Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [[Become a sponsor](https://opencollective.com/bootstrap#sponsor)]
+
+[![](https://opencollective.com/bootstrap/sponsor/0/avatar.svg)](https://opencollective.com/bootstrap/sponsor/0/website)
+[![](https://opencollective.com/bootstrap/sponsor/1/avatar.svg)](https://opencollective.com/bootstrap/sponsor/1/website)
+[![](https://opencollective.com/bootstrap/sponsor/2/avatar.svg)](https://opencollective.com/bootstrap/sponsor/2/website)
+[![](https://opencollective.com/bootstrap/sponsor/3/avatar.svg)](https://opencollective.com/bootstrap/sponsor/3/website)
+[![](https://opencollective.com/bootstrap/sponsor/4/avatar.svg)](https://opencollective.com/bootstrap/sponsor/4/website)
+[![](https://opencollective.com/bootstrap/sponsor/5/avatar.svg)](https://opencollective.com/bootstrap/sponsor/5/website)
+[![](https://opencollective.com/bootstrap/sponsor/6/avatar.svg)](https://opencollective.com/bootstrap/sponsor/6/website)
+[![](https://opencollective.com/bootstrap/sponsor/7/avatar.svg)](https://opencollective.com/bootstrap/sponsor/7/website)
+[![](https://opencollective.com/bootstrap/sponsor/8/avatar.svg)](https://opencollective.com/bootstrap/sponsor/8/website)
+[![](https://opencollective.com/bootstrap/sponsor/9/avatar.svg)](https://opencollective.com/bootstrap/sponsor/9/website)
+
+
 ## Copyright and license

 Code and documentation copyright 2011-2018 the [Bootstrap Authors](https://github.com/twbs/bootstrap/graphs/contributors) and [Twitter, Inc.](https://twitter.com) Code released under the [MIT License](https://github.com/twbs/bootstrap/blob/master/LICENSE). Docs released under [Creative Commons](https://github.com/twbs/bootstrap/blob/master/docs/LICENSE).
--- a/_config.yml
+++ b/_config.yml
@ -17,7 +17,7 @@ baseurl:        ""
 url:            "https://getbootstrap.com"
 encoding:       UTF-8
 exclude:
-  - docs/4.1/assets/scss/
+  - docs/4.2/assets/scss/

 plugins:
  - jekyll-redirect-from
@ -29,13 +29,13 @@ title:              Bootstrap
 description:        "The most popular HTML, CSS, and JS library in the world."
 twitter:            getbootstrap
 authors:            "Mark Otto, Jacob Thornton, and Bootstrap contributors"
-social_image_path:  /docs/4.1/assets/brand/bootstrap-social.png
-social_logo_path:   /docs/4.1/assets/brand/bootstrap-social-logo.png
+social_image_path:  /docs/4.2/assets/brand/bootstrap-social.png
+social_logo_path:   /docs/4.2/assets/brand/bootstrap-social-logo.png

 # Custom variables
-current_version:      4.1.3
-current_ruby_version: 4.1.3
-docs_version:         4.1
+current_version:      4.2.1
+current_ruby_version: 4.2.1
+docs_version:         4.2
 repo:                 "https://github.com/twbs/bootstrap"
 slack:                "https://bootstrap-slack.herokuapp.com"
 blog:                 "https://blog.getbootstrap.com"
@ -43,21 +43,21 @@ expo:                 "https://expo.getbootstrap.com"
 themes:               "https://themes.getbootstrap.com"

 download:
-  source:           "https://github.com/twbs/bootstrap/archive/v4.1.3.zip"
-  dist:             "https://github.com/twbs/bootstrap/releases/download/v4.1.3/bootstrap-4.1.3-dist.zip"
+  source:           "https://github.com/twbs/bootstrap/archive/v4.2.1.zip"
+  dist:             "https://github.com/twbs/bootstrap/releases/download/v4.2.1/bootstrap-4.2.1-dist.zip"

 cdn:
  # See https://www.srihash.org for info on how to generate the hashes
-  css:              "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
-  css_hash:         "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
-  js:               "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"
-  js_hash:          "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
-  js_bundle:        "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.bundle.min.js"
-  js_bundle_hash:   "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
+  css:              "https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css"
+  css_hash:         "sha384-GJzZqFGwb1QTTN6wy59ffF1BuGJpLSa9DkKMp0DgiMDm4iYMj70gZWKYbI706tWS"
+  js:               "https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js"
+  js_hash:          "sha384-B0UglyR+jN6CkvvICOB2joaf5I4l3gm9GU6Hc1og6Ls7i6U/mkkaduKaBhlAXv9k"
+  js_bundle:        "https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.bundle.min.js"
+  js_bundle_hash:   "sha384-zDnhMsjVZfS3hiP7oCBRmfjkQC4fzxVxFhBx8Hkz2aZX8gEvA/jsP3eXRCvzTofP"
  jquery:           "https://code.jquery.com/jquery-3.3.1.slim.min.js"
  jquery_hash:      "sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
-  popper:           "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.5/umd/popper.min.js"
-  popper_hash:      "sha384-a3GqK/TQoh+gPFAiesulJK7xiYNo3loQBWP1a68OkSUM5SqmmQxhzdMUGuNlAw3r"
+  popper:           "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js"
+  popper_hash:      "sha384-wHAiFfRlMFy6i5SRaxvfOCifBUQy1xHdJ/yoi7FRNXMRBu5WHdZYu1hA6ZOblgut"

 toc:
  min_level:        2
--- a/build/banner.js
+++ b/build/banner.js
@ -1,8 +1,7 @@
 'use strict'

-const path  = require('path')
-const pkg   = require(path.resolve(__dirname, '../package.json'))
-const year  = new Date().getFullYear()
+const pkg = require('../package.json')
+const year = new Date().getFullYear()

 function getBanner(pluginFilename) {
  return `/*!
--- a/build/gcp-key.json.enc
+++ b/build/gcp-key.json.enc
--- a/build/generate-sri.js
+++ b/build/generate-sri.js
@ -17,6 +17,8 @@ const fs = require('fs')
 const path = require('path')
 const sh = require('shelljs')

+const pkg = require('../package.json')
+
 sh.config.fatal = true

 const configFile = path.join(__dirname, '../_config.yml')
@ -34,7 +36,7 @@ const files = [
    configPropertyName: 'js_hash'
  },
  {
-    file: 'site/docs/4.1/assets/js/vendor/jquery-slim.min.js',
+    file: `site/docs/${pkg.version_short}/assets/js/vendor/jquery-slim.min.js`,
    configPropertyName: 'jquery_hash'
  },
  {
--- a/build/svgo.yml
+++ b/build/svgo.yml
@ -15,6 +15,10 @@ js2svg:
  indent: 2

 plugins:
+  # remove this with IE 11 is no longer supported
+  - addAttributesToSVGElement:
+      attributes:
+        - focusable: false
  - cleanupAttrs: true
  - cleanupEnableBackground: true
  - cleanupIDs: true
@ -41,8 +45,9 @@ plugins:
  - removeHiddenElems: true
  - removeMetadata: true
  - removeNonInheritableGroupAttrs: true
-  - removeTitle: true
-  - removeUnknownsAndDefaults: true
+  - removeTitle: false
+  - removeUnknownsAndDefaults:
+      keepRoleAttr: true
  - removeUnusedNS: true
  - removeUselessDefs: true
  - removeUselessStrokeAndFill: true
--- a/dist/css/bootstrap-grid.css
+++ b/dist/css/bootstrap-grid.css
@ -1,13 +1,9 @@
 /*!
- * Bootstrap Grid v4.1.3 (https://getbootstrap.com/)
+ * Bootstrap Grid v4.2.1 (https://getbootstrap.com/)
 * Copyright 2011-2018 The Bootstrap Authors
 * Copyright 2011-2018 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 */
-@-ms-viewport {
-  width: device-width;
-}
-
 html {
  box-sizing: border-box;
  -ms-overflow-style: scrollbar;
--- a/dist/css/bootstrap-grid.css.map
+++ b/dist/css/bootstrap-grid.css.map
--- a/dist/css/bootstrap-grid.min.css
+++ b/dist/css/bootstrap-grid.min.css
--- a/dist/css/bootstrap-grid.min.css.map
+++ b/dist/css/bootstrap-grid.min.css.map
--- a/dist/css/bootstrap-reboot.css
+++ b/dist/css/bootstrap-reboot.css
@ -1,5 +1,5 @@
 /*!
- * Bootstrap Reboot v4.1.3 (https://getbootstrap.com/)
+ * Bootstrap Reboot v4.2.1 (https://getbootstrap.com/)
 * Copyright 2011-2018 The Bootstrap Authors
 * Copyright 2011-2018 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
@ -15,21 +15,16 @@ html {
  font-family: sans-serif;
  line-height: 1.15;
  -webkit-text-size-adjust: 100%;
-  -ms-overflow-style: scrollbar;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
 }

-@-ms-viewport {
-  width: device-width;
-}
-
 article, aside, figcaption, figure, footer, header, hgroup, main, nav, section {
  display: block;
 }

 body {
  margin: 0;
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, Noto Sans, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
@ -163,7 +158,6 @@ pre {
  margin-top: 0;
  margin-bottom: 1rem;
  overflow: auto;
-  -ms-overflow-style: scrollbar;
 }

 figure {
--- a/dist/css/bootstrap-reboot.css.map
+++ b/dist/css/bootstrap-reboot.css.map
--- a/dist/css/bootstrap-reboot.min.css
+++ b/dist/css/bootstrap-reboot.min.css
@ -1,8 +1,8 @@
 /*!
- * Bootstrap Reboot v4.1.3 (https://getbootstrap.com/)
+ * Bootstrap Reboot v4.2.1 (https://getbootstrap.com/)
 * Copyright 2011-2018 The Bootstrap Authors
 * Copyright 2011-2018 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
- */*,::after,::before{box-sizing:border-box}html{font-family:sans-serif;line-height:1.15;-webkit-text-size-adjust:100%;-ms-overflow-style:scrollbar;-webkit-tap-highlight-color:transparent}@-ms-viewport{width:device-width}article,aside,figcaption,figure,footer,header,hgroup,main,nav,section{display:block}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,Noto Sans,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;text-align:left;background-color:#fff}[tabindex="-1"]:focus{outline:0!important}hr{box-sizing:content-box;height:0;overflow:visible}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem}p{margin-top:0;margin-bottom:1rem}abbr[data-original-title],abbr[title]{text-decoration:underline;-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;border-bottom:0;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:80%}sub,sup{position:relative;font-size:75%;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#007bff;text-decoration:none;background-color:transparent}a:hover{color:#0056b3;text-decoration:underline}a:not([href]):not([tabindex]){color:inherit;text-decoration:none}a:not([href]):not([tabindex]):focus,a:not([href]):not([tabindex]):hover{color:inherit;text-decoration:none}a:not([href]):not([tabindex]):focus{outline:0}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em}pre{margin-top:0;margin-bottom:1rem;overflow:auto;-ms-overflow-style:scrollbar}figure{margin:0 0 1rem}img{vertical-align:middle;border-style:none}svg{overflow:hidden;vertical-align:middle}table{border-collapse:collapse}caption{padding-top:.75rem;padding-bottom:.75rem;color:#6c757d;text-align:left;caption-side:bottom}th{text-align:inherit}label{display:inline-block;margin-bottom:.5rem}button{border-radius:0}button:focus{outline:1px dotted;outline:5px auto -webkit-focus-ring-color}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,input{overflow:visible}button,select{text-transform:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner,button::-moz-focus-inner{padding:0;border-style:none}input[type=checkbox],input[type=radio]{box-sizing:border-box;padding:0}input[type=date],input[type=datetime-local],input[type=month],input[type=time]{-webkit-appearance:listbox}textarea{overflow:auto;resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{display:block;width:100%;max-width:100%;padding:0;margin-bottom:.5rem;font-size:1.5rem;line-height:inherit;color:inherit;white-space:normal}progress{vertical-align:baseline}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:none}[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}summary{display:list-item;cursor:pointer}template{display:none}[hidden]{display:none!important}
+ */*,::after,::before{box-sizing:border-box}html{font-family:sans-serif;line-height:1.15;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}article,aside,figcaption,figure,footer,header,hgroup,main,nav,section{display:block}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;text-align:left;background-color:#fff}[tabindex="-1"]:focus{outline:0!important}hr{box-sizing:content-box;height:0;overflow:visible}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem}p{margin-top:0;margin-bottom:1rem}abbr[data-original-title],abbr[title]{text-decoration:underline;-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;border-bottom:0;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:80%}sub,sup{position:relative;font-size:75%;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#007bff;text-decoration:none;background-color:transparent}a:hover{color:#0056b3;text-decoration:underline}a:not([href]):not([tabindex]){color:inherit;text-decoration:none}a:not([href]):not([tabindex]):focus,a:not([href]):not([tabindex]):hover{color:inherit;text-decoration:none}a:not([href]):not([tabindex]):focus{outline:0}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em}pre{margin-top:0;margin-bottom:1rem;overflow:auto}figure{margin:0 0 1rem}img{vertical-align:middle;border-style:none}svg{overflow:hidden;vertical-align:middle}table{border-collapse:collapse}caption{padding-top:.75rem;padding-bottom:.75rem;color:#6c757d;text-align:left;caption-side:bottom}th{text-align:inherit}label{display:inline-block;margin-bottom:.5rem}button{border-radius:0}button:focus{outline:1px dotted;outline:5px auto -webkit-focus-ring-color}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,input{overflow:visible}button,select{text-transform:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner,button::-moz-focus-inner{padding:0;border-style:none}input[type=checkbox],input[type=radio]{box-sizing:border-box;padding:0}input[type=date],input[type=datetime-local],input[type=month],input[type=time]{-webkit-appearance:listbox}textarea{overflow:auto;resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{display:block;width:100%;max-width:100%;padding:0;margin-bottom:.5rem;font-size:1.5rem;line-height:inherit;color:inherit;white-space:normal}progress{vertical-align:baseline}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:none}[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}summary{display:list-item;cursor:pointer}template{display:none}[hidden]{display:none!important}
 /*# sourceMappingURL=bootstrap-reboot.min.css.map */
--- a/dist/css/bootstrap-reboot.min.css.map
+++ b/dist/css/bootstrap-reboot.min.css.map
--- a/dist/css/bootstrap.css
+++ b/dist/css/bootstrap.css
@ -1,5 +1,5 @@
 /*!
- * Bootstrap v4.1.3 (https://getbootstrap.com/)
+ * Bootstrap v4.2.1 (https://getbootstrap.com/)
 * Copyright 2011-2018 The Bootstrap Authors
 * Copyright 2011-2018 Twitter, Inc.
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
@ -31,7 +31,7 @@
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
-  --font-family-sans-serif: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, Noto Sans, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
+  --font-family-sans-serif: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --font-family-monospace: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
 }

@ -45,21 +45,16 @@ html {
  font-family: sans-serif;
  line-height: 1.15;
  -webkit-text-size-adjust: 100%;
-  -ms-overflow-style: scrollbar;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
 }

-@-ms-viewport {
-  width: device-width;
-}
-
 article, aside, figcaption, figure, footer, header, hgroup, main, nav, section {
  display: block;
 }

 body {
  margin: 0;
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, Noto Sans, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.5;
@ -193,7 +188,6 @@ pre {
  margin-top: 0;
  margin-bottom: 1rem;
  overflow: auto;
-  -ms-overflow-style: scrollbar;
 }

 figure {
@ -1510,6 +1504,7 @@ pre code {
 .table {
  width: 100%;
  margin-bottom: 1rem;
+  color: #212529;
  background-color: transparent;
 }

@ -1564,6 +1559,7 @@ pre code {
 }

 .table-hover tbody tr:hover {
+  color: #212529;
  background-color: rgba(0, 0, 0, 0.075);
 }

@ -1760,8 +1756,8 @@ pre code {

 .table .thead-dark th {
  color: #fff;
-  background-color: #212529;
-  border-color: #32383e;
+  background-color: #343a40;
+  border-color: #454d55;
 }

 .table .thead-light th {
@ -1772,13 +1768,13 @@ pre code {

 .table-dark {
  color: #fff;
-  background-color: #212529;
+  background-color: #343a40;
 }

 .table-dark th,
 .table-dark td,
 .table-dark thead th {
-  border-color: #32383e;
+  border-color: #454d55;
 }

 .table-dark.table-bordered {
@ -1790,6 +1786,7 @@ pre code {
 }

 .table-dark.table-hover tbody tr:hover {
+  color: #fff;
  background-color: rgba(255, 255, 255, 0.075);
 }

@ -2361,6 +2358,8 @@ textarea.form-control {
  }
  .form-inline .form-check-input {
    position: relative;
+    -ms-flex-negative: 0;
+    flex-shrink: 0;
    margin-top: 0;
    margin-right: 0.25rem;
    margin-left: 0;
@ -3309,8 +3308,8 @@ input[type="button"].btn-block {
 .btn-group > .btn,
 .btn-group-vertical > .btn {
  position: relative;
-  -ms-flex: 0 1 auto;
-  flex: 0 1 auto;
+  -ms-flex: 1 1 auto;
+  flex: 1 1 auto;
 }

 .btn-group > .btn:hover,
@ -3736,6 +3735,45 @@ input[type="button"].btn-block {
  background-color: rgba(0, 123, 255, 0.5);
 }

+.custom-switch {
+  padding-left: 2.25rem;
+}
+
+.custom-switch .custom-control-label::before {
+  left: -2.25rem;
+  width: 1.75rem;
+  pointer-events: all;
+  border-radius: 0.5rem;
+}
+
+.custom-switch .custom-control-label::after {
+  top: calc(0.25rem + 2px);
+  left: calc(-2.25rem + 2px);
+  width: calc(1rem - 4px);
+  height: calc(1rem - 4px);
+  background-color: #adb5bd;
+  border-radius: 0.5rem;
+  transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out, -webkit-transform 0.15s ease-in-out;
+  transition: transform 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
+  transition: transform 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out, -webkit-transform 0.15s ease-in-out;
+}
+
+@media screen and (prefers-reduced-motion: reduce) {
+  .custom-switch .custom-control-label::after {
+    transition: none;
+  }
+}
+
+.custom-switch .custom-control-input:checked ~ .custom-control-label::after {
+  background-color: #fff;
+  -webkit-transform: translateX(0.75rem);
+  transform: translateX(0.75rem);
+}
+
+.custom-switch .custom-control-input:disabled:checked ~ .custom-control-label::before {
+  background-color: rgba(0, 123, 255, 0.5);
+}
+
 .custom-select {
  display: inline-block;
  width: 100%;
@ -4950,6 +4988,13 @@ input[type="button"].btn-block {
  white-space: nowrap;
  vertical-align: baseline;
  border-radius: 0.25rem;
+  transition: color 0.15s ease-in-out, background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
+}
+
+@media screen and (prefers-reduced-motion: reduce) {
+  .badge {
+    transition: none;
+  }
 }

 a.badge:hover, a.badge:focus {
@ -4981,6 +5026,11 @@ a.badge-primary:hover, a.badge-primary:focus {
  background-color: #0062cc;
 }

+a.badge-primary:focus, a.badge-primary.focus {
+  outline: 0;
+  box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.5);
+}
+
 .badge-secondary {
  color: #fff;
  background-color: #6c757d;
@ -4991,6 +5041,11 @@ a.badge-secondary:hover, a.badge-secondary:focus {
  background-color: #545b62;
 }

+a.badge-secondary:focus, a.badge-secondary.focus {
+  outline: 0;
+  box-shadow: 0 0 0 0.2rem rgba(108, 117, 125, 0.5);
+}
+
 .badge-success {
  color: #fff;
  background-color: #28a745;
@ -5001,6 +5056,11 @@ a.badge-success:hover, a.badge-success:focus {
  background-color: #1e7e34;
 }

+a.badge-success:focus, a.badge-success.focus {
+  outline: 0;
+  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.5);
+}
+
 .badge-info {
  color: #fff;
  background-color: #17a2b8;
@ -5011,6 +5071,11 @@ a.badge-info:hover, a.badge-info:focus {
  background-color: #117a8b;
 }

+a.badge-info:focus, a.badge-info.focus {
+  outline: 0;
+  box-shadow: 0 0 0 0.2rem rgba(23, 162, 184, 0.5);
+}
+
 .badge-warning {
  color: #212529;
  background-color: #ffc107;
@ -5021,6 +5086,11 @@ a.badge-warning:hover, a.badge-warning:focus {
  background-color: #d39e00;
 }

+a.badge-warning:focus, a.badge-warning.focus {
+  outline: 0;
+  box-shadow: 0 0 0 0.2rem rgba(255, 193, 7, 0.5);
+}
+
 .badge-danger {
  color: #fff;
  background-color: #dc3545;
@ -5031,6 +5101,11 @@ a.badge-danger:hover, a.badge-danger:focus {
  background-color: #bd2130;
 }

+a.badge-danger:focus, a.badge-danger.focus {
+  outline: 0;
+  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.5);
+}
+
 .badge-light {
  color: #212529;
  background-color: #f8f9fa;
@ -5041,6 +5116,11 @@ a.badge-light:hover, a.badge-light:focus {
  background-color: #dae0e5;
 }

+a.badge-light:focus, a.badge-light.focus {
+  outline: 0;
+  box-shadow: 0 0 0 0.2rem rgba(248, 249, 250, 0.5);
+}
+
 .badge-dark {
  color: #fff;
  background-color: #343a40;
@ -5051,6 +5131,11 @@ a.badge-dark:hover, a.badge-dark:focus {
  background-color: #1d2124;
 }

+a.badge-dark:focus, a.badge-dark.focus {
+  outline: 0;
+  box-shadow: 0 0 0 0.2rem rgba(52, 58, 64, 0.5);
+}
+
 .jumbotron {
  padding: 2rem 1rem;
  margin-bottom: 2rem;
@ -5528,25 +5613,34 @@ a.close.disabled {
 }

 .toast {
-  display: none;
  max-width: 350px;
  overflow: hidden;
  font-size: 0.875rem;
  background-color: rgba(255, 255, 255, 0.85);
  background-clip: padding-box;
  border: 1px solid rgba(0, 0, 0, 0.1);
-  border-radius: 0.25rem;
  box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.1);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
+  opacity: 0;
+  border-radius: 0.25rem;
 }

-.toast + .toast {
-  margin-top: 0.75rem;
+.toast:not(:last-child) {
+  margin-bottom: 0.75rem;
+}
+
+.toast.showing {
+  opacity: 1;
 }

 .toast.show {
  display: block;
+  opacity: 1;
+}
+
+.toast.hide {
+  display: none;
 }

 .toast-header {
@ -5667,7 +5761,7 @@ a.close.disabled {
  -ms-flex-pack: justify;
  justify-content: space-between;
  padding: 1rem 1rem;
-  border-bottom: 1px solid #e9ecef;
+  border-bottom: 1px solid #dee2e6;
  border-top-left-radius: 0.3rem;
  border-top-right-radius: 0.3rem;
 }
@ -5697,7 +5791,7 @@ a.close.disabled {
  -ms-flex-pack: end;
  justify-content: flex-end;
  padding: 1rem;
-  border-top: 1px solid #e9ecef;
+  border-top: 1px solid #dee2e6;
  border-bottom-right-radius: 0.3rem;
  border-bottom-left-radius: 0.3rem;
 }
@ -5752,7 +5846,7 @@ a.close.disabled {
  z-index: 1070;
  display: block;
  margin: 0;
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, Noto Sans, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  font-style: normal;
  font-weight: 400;
  line-height: 1.5;
@ -5865,7 +5959,7 @@ a.close.disabled {
  z-index: 1060;
  display: block;
  max-width: 276px;
-  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, Noto Sans, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
+  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  font-style: normal;
  font-weight: 400;
  line-height: 1.5;
@ -5907,24 +6001,24 @@ a.close.disabled {
  margin-bottom: 0.5rem;
 }

-.bs-popover-top .arrow, .bs-popover-auto[x-placement^="top"] .arrow {
+.bs-popover-top > .arrow, .bs-popover-auto[x-placement^="top"] > .arrow {
  bottom: calc((0.5rem + 1px) * -1);
 }

-.bs-popover-top .arrow::before, .bs-popover-auto[x-placement^="top"] .arrow::before,
-.bs-popover-top .arrow::after,
-.bs-popover-auto[x-placement^="top"] .arrow::after {
+.bs-popover-top > .arrow::before, .bs-popover-auto[x-placement^="top"] > .arrow::before,
+.bs-popover-top > .arrow::after,
+.bs-popover-auto[x-placement^="top"] > .arrow::after {
  border-width: 0.5rem 0.5rem 0;
 }

-.bs-popover-top .arrow::before, .bs-popover-auto[x-placement^="top"] .arrow::before {
+.bs-popover-top > .arrow::before, .bs-popover-auto[x-placement^="top"] > .arrow::before {
  bottom: 0;
  border-top-color: rgba(0, 0, 0, 0.25);
 }


-.bs-popover-top .arrow::after,
-.bs-popover-auto[x-placement^="top"] .arrow::after {
+.bs-popover-top > .arrow::after,
+.bs-popover-auto[x-placement^="top"] > .arrow::after {
  bottom: 1px;
  border-top-color: #fff;
 }
@ -5933,27 +6027,27 @@ a.close.disabled {
  margin-left: 0.5rem;
 }

-.bs-popover-right .arrow, .bs-popover-auto[x-placement^="right"] .arrow {
+.bs-popover-right > .arrow, .bs-popover-auto[x-placement^="right"] > .arrow {
  left: calc((0.5rem + 1px) * -1);
  width: 0.5rem;
  height: 1rem;
  margin: 0.3rem 0;
 }

-.bs-popover-right .arrow::before, .bs-popover-auto[x-placement^="right"] .arrow::before,
-.bs-popover-right .arrow::after,
-.bs-popover-auto[x-placement^="right"] .arrow::after {
+.bs-popover-right > .arrow::before, .bs-popover-auto[x-placement^="right"] > .arrow::before,
+.bs-popover-right > .arrow::after,
+.bs-popover-auto[x-placement^="right"] > .arrow::after {
  border-width: 0.5rem 0.5rem 0.5rem 0;
 }

-.bs-popover-right .arrow::before, .bs-popover-auto[x-placement^="right"] .arrow::before {
+.bs-popover-right > .arrow::before, .bs-popover-auto[x-placement^="right"] > .arrow::before {
  left: 0;
  border-right-color: rgba(0, 0, 0, 0.25);
 }


-.bs-popover-right .arrow::after,
-.bs-popover-auto[x-placement^="right"] .arrow::after {
+.bs-popover-right > .arrow::after,
+.bs-popover-auto[x-placement^="right"] > .arrow::after {
  left: 1px;
  border-right-color: #fff;
 }
@ -5962,24 +6056,24 @@ a.close.disabled {
  margin-top: 0.5rem;
 }

-.bs-popover-bottom .arrow, .bs-popover-auto[x-placement^="bottom"] .arrow {
+.bs-popover-bottom > .arrow, .bs-popover-auto[x-placement^="bottom"] > .arrow {
  top: calc((0.5rem + 1px) * -1);
 }

-.bs-popover-bottom .arrow::before, .bs-popover-auto[x-placement^="bottom"] .arrow::before,
-.bs-popover-bottom .arrow::after,
-.bs-popover-auto[x-placement^="bottom"] .arrow::after {
+.bs-popover-bottom > .arrow::before, .bs-popover-auto[x-placement^="bottom"] > .arrow::before,
+.bs-popover-bottom > .arrow::after,
+.bs-popover-auto[x-placement^="bottom"] > .arrow::after {
  border-width: 0 0.5rem 0.5rem 0.5rem;
 }

-.bs-popover-bottom .arrow::before, .bs-popover-auto[x-placement^="bottom"] .arrow::before {
+.bs-popover-bottom > .arrow::before, .bs-popover-auto[x-placement^="bottom"] > .arrow::before {
  top: 0;
  border-bottom-color: rgba(0, 0, 0, 0.25);
 }


-.bs-popover-bottom .arrow::after,
-.bs-popover-auto[x-placement^="bottom"] .arrow::after {
+.bs-popover-bottom > .arrow::after,
+.bs-popover-auto[x-placement^="bottom"] > .arrow::after {
  top: 1px;
  border-bottom-color: #fff;
 }
@ -5999,27 +6093,27 @@ a.close.disabled {
  margin-right: 0.5rem;
 }

-.bs-popover-left .arrow, .bs-popover-auto[x-placement^="left"] .arrow {
+.bs-popover-left > .arrow, .bs-popover-auto[x-placement^="left"] > .arrow {
  right: calc((0.5rem + 1px) * -1);
  width: 0.5rem;
  height: 1rem;
  margin: 0.3rem 0;
 }

-.bs-popover-left .arrow::before, .bs-popover-auto[x-placement^="left"] .arrow::before,
-.bs-popover-left .arrow::after,
-.bs-popover-auto[x-placement^="left"] .arrow::after {
+.bs-popover-left > .arrow::before, .bs-popover-auto[x-placement^="left"] > .arrow::before,
+.bs-popover-left > .arrow::after,
+.bs-popover-auto[x-placement^="left"] > .arrow::after {
  border-width: 0.5rem 0 0.5rem 0.5rem;
 }

-.bs-popover-left .arrow::before, .bs-popover-auto[x-placement^="left"] .arrow::before {
+.bs-popover-left > .arrow::before, .bs-popover-auto[x-placement^="left"] > .arrow::before {
  right: 0;
  border-left-color: rgba(0, 0, 0, 0.25);
 }


-.bs-popover-left .arrow::after,
-.bs-popover-auto[x-placement^="left"] .arrow::after {
+.bs-popover-left > .arrow::after,
+.bs-popover-auto[x-placement^="left"] > .arrow::after {
  right: 1px;
  border-left-color: #fff;
 }
@ -6264,8 +6358,6 @@ a.close.disabled {
  display: inline-block;
  width: 2rem;
  height: 2rem;
-  overflow: hidden;
-  text-indent: -999em;
  vertical-align: text-bottom;
  border: 0.25em solid currentColor;
  border-right-color: transparent;
@ -6304,8 +6396,6 @@ a.close.disabled {
  display: inline-block;
  width: 2rem;
  height: 2rem;
-  overflow: hidden;
-  text-indent: -999em;
  vertical-align: text-bottom;
  background-color: currentColor;
  border-radius: 50%;
@ -9756,6 +9846,10 @@ a.text-dark:hover, a.text-dark:focus {
  text-decoration: none !important;
 }

+.text-break {
+  word-break: break-word !important;
+}
+
 .text-reset {
  color: inherit !important;
 }
--- a/dist/css/bootstrap.css.map
+++ b/dist/css/bootstrap.css.map
--- a/dist/css/bootstrap.min.css
+++ b/dist/css/bootstrap.min.css
--- a/dist/css/bootstrap.min.css.map
+++ b/dist/css/bootstrap.min.css.map
--- a/dist/js/bootstrap.bundle.js
+++ b/dist/js/bootstrap.bundle.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -69,7 +69,7 @@

  /**
   * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.3): util.js
+   * Bootstrap (v4.2.1): util.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
@ -192,6 +192,28 @@
          }
        }
      }
+    },
+    findShadowRoot: function findShadowRoot(element) {
+      if (!document.documentElement.attachShadow) {
+        return null;
+      } // Can find the shadow root otherwise it'll return the document
+
+
+      if (typeof element.getRootNode === 'function') {
+        var root = element.getRootNode();
+        return root instanceof ShadowRoot ? root : null;
+      }
+
+      if (element instanceof ShadowRoot) {
+        return element;
+      } // when we don't find a shadow root
+
+
+      if (!element.parentNode) {
+        return null;
+      }
+
+      return Util.findShadowRoot(element.parentNode);
    }
  };
  setTransitionEndSupport();
@ -203,7 +225,7 @@
   */

  var NAME = 'alert';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.alert';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
@ -368,7 +390,7 @@
   */

  var NAME$1 = 'button';
-  var VERSION$1 = '4.1.3';
+  var VERSION$1 = '4.2.1';
  var DATA_KEY$1 = 'bs.button';
  var EVENT_KEY$1 = "." + DATA_KEY$1;
  var DATA_API_KEY$1 = '.data-api';
@ -381,7 +403,7 @@
  var Selector$1 = {
    DATA_TOGGLE_CARROT: '[data-toggle^="button"]',
    DATA_TOGGLE: '[data-toggle="buttons"]',
-    INPUT: 'input',
+    INPUT: 'input:not([type="hidden"])',
    ACTIVE: '.active',
    BUTTON: '.btn'
  };
@ -522,7 +544,7 @@
   */

  var NAME$2 = 'carousel';
-  var VERSION$2 = '4.1.3';
+  var VERSION$2 = '4.2.1';
  var DATA_KEY$2 = 'bs.carousel';
  var EVENT_KEY$2 = "." + DATA_KEY$2;
  var DATA_API_KEY$2 = '.data-api';
@ -1120,7 +1142,7 @@
   */

  var NAME$3 = 'collapse';
-  var VERSION$3 = '4.1.3';
+  var VERSION$3 = '4.2.1';
  var DATA_KEY$3 = 'bs.collapse';
  var EVENT_KEY$3 = "." + DATA_KEY$3;
  var DATA_API_KEY$3 = '.data-api';
@ -1475,7 +1497,7 @@

  /**!
   * @fileOverview Kickass library to create and place poppers near their reference elements.
-   * @version 1.14.5
+   * @version 1.14.6
   * @license
   * Copyright (c) 2016 Federico Zivolo and contributors
   *
@ -2225,8 +2247,8 @@
  function getOuterSizes(element) {
    var window = element.ownerDocument.defaultView;
    var styles = window.getComputedStyle(element);
-    var x = parseFloat(styles.marginTop) + parseFloat(styles.marginBottom);
-    var y = parseFloat(styles.marginLeft) + parseFloat(styles.marginRight);
+    var x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);
+    var y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);
    var result = {
      width: element.offsetWidth + y,
      height: element.offsetHeight + x
@ -2676,6 +2698,52 @@
    return options;
  }

+  /**
+   * @function
+   * @memberof Popper.Utils
+   * @argument {Object} data - The data object generated by `update` method
+   * @argument {Boolean} shouldRound - If the offsets should be rounded at all
+   * @returns {Object} The popper's position offsets rounded
+   *
+   * The tale of pixel-perfect positioning. It's still not 100% perfect, but as
+   * good as it can be within reason.
+   * Discussion here: https://github.com/FezVrasta/popper.js/pull/715
+   *
+   * Low DPI screens cause a popper to be blurry if not using full pixels (Safari
+   * as well on High DPI screens).
+   *
+   * Firefox prefers no rounding for positioning and does not have blurriness on
+   * high DPI screens.
+   *
+   * Only horizontal placement and left/right values need to be considered.
+   */
+  function getRoundedOffsets(data, shouldRound) {
+    var _data$offsets = data.offsets,
+        popper = _data$offsets.popper,
+        reference = _data$offsets.reference;
+
+
+    var isVertical = ['left', 'right'].indexOf(data.placement) !== -1;
+    var isVariation = data.placement.indexOf('-') !== -1;
+    var sameWidthOddness = reference.width % 2 === popper.width % 2;
+    var bothOddWidth = reference.width % 2 === 1 && popper.width % 2 === 1;
+    var noRound = function noRound(v) {
+      return v;
+    };
+
+    var horizontalToInteger = !shouldRound ? noRound : isVertical || isVariation || sameWidthOddness ? Math.round : Math.floor;
+    var verticalToInteger = !shouldRound ? noRound : Math.round;
+
+    return {
+      left: horizontalToInteger(bothOddWidth && !isVariation && shouldRound ? popper.left - 1 : popper.left),
+      top: verticalToInteger(popper.top),
+      bottom: verticalToInteger(popper.bottom),
+      right: horizontalToInteger(popper.right)
+    };
+  }
+
+  var isFirefox = isBrowser && /Firefox/i.test(navigator.userAgent);
+
  /**
   * @function
   * @memberof Modifiers
@ -2706,15 +2774,7 @@
      position: popper.position
    };

-    // Avoid blurry text by using full pixel integers.
-    // For pixel-perfect positioning, top/bottom prefers rounded
-    // values, while left/right prefers floored values.
-    var offsets = {
-      left: Math.floor(popper.left),
-      top: Math.round(popper.top),
-      bottom: Math.round(popper.bottom),
-      right: Math.floor(popper.right)
-    };
+    var offsets = getRoundedOffsets(data, window.devicePixelRatio < 2 || !isFirefox);

    var sideA = x === 'bottom' ? 'top' : 'bottom';
    var sideB = y === 'right' ? 'left' : 'right';
@ -4012,7 +4072,7 @@
   */

  var NAME$4 = 'dropdown';
-  var VERSION$4 = '4.1.3';
+  var VERSION$4 = '4.2.1';
  var DATA_KEY$4 = 'bs.dropdown';
  var EVENT_KEY$4 = "." + DATA_KEY$4;
  var DATA_API_KEY$4 = '.data-api';
@ -4444,7 +4504,7 @@

      var isActive = $(parent).hasClass(ClassName$4.SHOW);

-      if (!isActive && (event.which !== ESCAPE_KEYCODE || event.which !== SPACE_KEYCODE) || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
+      if (!isActive || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
        if (event.which === ESCAPE_KEYCODE) {
          var toggle = parent.querySelector(Selector$4.DATA_TOGGLE);
          $(toggle).trigger('focus');
@ -4534,7 +4594,7 @@
   */

  var NAME$5 = 'modal';
-  var VERSION$5 = '4.1.3';
+  var VERSION$5 = '4.2.1';
  var DATA_KEY$5 = 'bs.modal';
  var EVENT_KEY$5 = "." + DATA_KEY$5;
  var DATA_API_KEY$5 = '.data-api';
@ -4750,6 +4810,8 @@

      this._element.removeAttribute('aria-hidden');

+      this._element.setAttribute('aria-modal', true);
+
      this._element.scrollTop = 0;

      if (transition) {
@ -4829,6 +4891,8 @@

      this._element.setAttribute('aria-hidden', true);

+      this._element.removeAttribute('aria-modal');
+
      this._isTransitioning = false;

      this._showBackdrop(function () {
@ -5106,7 +5170,7 @@
   */

  var NAME$6 = 'tooltip';
-  var VERSION$6 = '4.1.3';
+  var VERSION$6 = '4.2.1';
  var DATA_KEY$6 = 'bs.tooltip';
  var EVENT_KEY$6 = "." + DATA_KEY$6;
  var JQUERY_NO_CONFLICT$6 = $.fn[NAME$6];
@ -5295,7 +5359,8 @@

      if (this.isWithContent() && this._isEnabled) {
        $(this.element).trigger(showEvent);
-        var isInTheDom = $.contains(this.element.ownerDocument.documentElement, this.element);
+        var shadowRoot = Util.findShadowRoot(this.element);
+        var isInTheDom = $.contains(shadowRoot !== null ? shadowRoot : this.element.ownerDocument.documentElement, this.element);

        if (showEvent.isDefaultPrevented() || !isInTheDom) {
          return;
@ -5316,7 +5381,9 @@
        var attachment = this._getAttachment(placement);

        this.addAttachmentClass(attachment);
-        var container = this.config.container === false ? document.body : $(document).find(this.config.container);
+
+        var container = this._getContainer();
+
        $(tip).data(this.constructor.DATA_KEY, this);

        if (!$.contains(this.element.ownerDocument.documentElement, this.tip)) {
@ -5488,6 +5555,18 @@
    }; // Private


+    _proto._getContainer = function _getContainer() {
+      if (this.config.container === false) {
+        return document.body;
+      }
+
+      if (Util.isElement(this.config.container)) {
+        return $(this.config.container);
+      }
+
+      return $(document).find(this.config.container);
+    };
+
    _proto._getAttachment = function _getAttachment(placement) {
      return AttachmentMap$1[placement.toUpperCase()];
    };
@ -5767,7 +5846,7 @@
   */

  var NAME$7 = 'popover';
-  var VERSION$7 = '4.1.3';
+  var VERSION$7 = '4.2.1';
  var DATA_KEY$7 = 'bs.popover';
  var EVENT_KEY$7 = "." + DATA_KEY$7;
  var JQUERY_NO_CONFLICT$7 = $.fn[NAME$7];
@ -5954,7 +6033,7 @@
   */

  var NAME$8 = 'scrollspy';
-  var VERSION$8 = '4.1.3';
+  var VERSION$8 = '4.2.1';
  var DATA_KEY$8 = 'bs.scrollspy';
  var EVENT_KEY$8 = "." + DATA_KEY$8;
  var DATA_API_KEY$6 = '.data-api';
@ -6261,7 +6340,7 @@
   */

  var NAME$9 = 'tab';
-  var VERSION$9 = '4.1.3';
+  var VERSION$9 = '4.2.1';
  var DATA_KEY$9 = 'bs.tab';
  var EVENT_KEY$9 = "." + DATA_KEY$9;
  var DATA_API_KEY$7 = '.data-api';
@ -6493,7 +6572,7 @@
   */

  var NAME$a = 'toast';
-  var VERSION$a = '4.1.3';
+  var VERSION$a = '4.2.1';
  var DATA_KEY$a = 'bs.toast';
  var EVENT_KEY$a = "." + DATA_KEY$a;
  var JQUERY_NO_CONFLICT$a = $.fn[NAME$a];
@ -6507,7 +6586,8 @@
  var ClassName$a = {
    FADE: 'fade',
    HIDE: 'hide',
-    SHOW: 'show'
+    SHOW: 'show',
+    SHOWING: 'showing'
  };
  var DefaultType$7 = {
    animation: 'boolean',
@ -6554,6 +6634,10 @@
      }

      var complete = function complete() {
+        _this._element.classList.remove(ClassName$a.SHOWING);
+
+        _this._element.classList.add(ClassName$a.SHOW);
+
        $(_this._element).trigger(Event$a.SHOWN);

        if (_this._config.autohide) {
@ -6561,7 +6645,9 @@
        }
      };

-      this._element.classList.add(ClassName$a.SHOW);
+      this._element.classList.remove(ClassName$a.HIDE);
+
+      this._element.classList.add(ClassName$a.SHOWING);

      if (this._config.animation) {
        var transitionDuration = Util.getTransitionDurationFromElement(this._element);
@ -6622,6 +6708,8 @@
      var _this4 = this;

      var complete = function complete() {
+        _this4._element.classList.add(ClassName$a.HIDE);
+
        $(_this4._element).trigger(Event$a.HIDDEN);
      };

@ -6689,7 +6777,7 @@

  /**
   * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.3): index.js
+   * Bootstrap (v4.2.1): index.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
--- a/dist/js/bootstrap.bundle.js.map
+++ b/dist/js/bootstrap.bundle.js.map
--- a/dist/js/bootstrap.bundle.min.js
+++ b/dist/js/bootstrap.bundle.min.js
--- a/dist/js/bootstrap.bundle.min.js.map
+++ b/dist/js/bootstrap.bundle.min.js.map
--- a/dist/js/bootstrap.js
+++ b/dist/js/bootstrap.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -70,7 +70,7 @@

  /**
   * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.3): util.js
+   * Bootstrap (v4.2.1): util.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
@ -193,6 +193,28 @@
          }
        }
      }
+    },
+    findShadowRoot: function findShadowRoot(element) {
+      if (!document.documentElement.attachShadow) {
+        return null;
+      } // Can find the shadow root otherwise it'll return the document
+
+
+      if (typeof element.getRootNode === 'function') {
+        var root = element.getRootNode();
+        return root instanceof ShadowRoot ? root : null;
+      }
+
+      if (element instanceof ShadowRoot) {
+        return element;
+      } // when we don't find a shadow root
+
+
+      if (!element.parentNode) {
+        return null;
+      }
+
+      return Util.findShadowRoot(element.parentNode);
    }
  };
  setTransitionEndSupport();
@ -204,7 +226,7 @@
   */

  var NAME = 'alert';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.alert';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
@ -369,7 +391,7 @@
   */

  var NAME$1 = 'button';
-  var VERSION$1 = '4.1.3';
+  var VERSION$1 = '4.2.1';
  var DATA_KEY$1 = 'bs.button';
  var EVENT_KEY$1 = "." + DATA_KEY$1;
  var DATA_API_KEY$1 = '.data-api';
@ -382,7 +404,7 @@
  var Selector$1 = {
    DATA_TOGGLE_CARROT: '[data-toggle^="button"]',
    DATA_TOGGLE: '[data-toggle="buttons"]',
-    INPUT: 'input',
+    INPUT: 'input:not([type="hidden"])',
    ACTIVE: '.active',
    BUTTON: '.btn'
  };
@ -523,7 +545,7 @@
   */

  var NAME$2 = 'carousel';
-  var VERSION$2 = '4.1.3';
+  var VERSION$2 = '4.2.1';
  var DATA_KEY$2 = 'bs.carousel';
  var EVENT_KEY$2 = "." + DATA_KEY$2;
  var DATA_API_KEY$2 = '.data-api';
@ -1121,7 +1143,7 @@
   */

  var NAME$3 = 'collapse';
-  var VERSION$3 = '4.1.3';
+  var VERSION$3 = '4.2.1';
  var DATA_KEY$3 = 'bs.collapse';
  var EVENT_KEY$3 = "." + DATA_KEY$3;
  var DATA_API_KEY$3 = '.data-api';
@ -1481,7 +1503,7 @@
   */

  var NAME$4 = 'dropdown';
-  var VERSION$4 = '4.1.3';
+  var VERSION$4 = '4.2.1';
  var DATA_KEY$4 = 'bs.dropdown';
  var EVENT_KEY$4 = "." + DATA_KEY$4;
  var DATA_API_KEY$4 = '.data-api';
@ -1913,7 +1935,7 @@

      var isActive = $(parent).hasClass(ClassName$4.SHOW);

-      if (!isActive && (event.which !== ESCAPE_KEYCODE || event.which !== SPACE_KEYCODE) || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
+      if (!isActive || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
        if (event.which === ESCAPE_KEYCODE) {
          var toggle = parent.querySelector(Selector$4.DATA_TOGGLE);
          $(toggle).trigger('focus');
@ -2003,7 +2025,7 @@
   */

  var NAME$5 = 'modal';
-  var VERSION$5 = '4.1.3';
+  var VERSION$5 = '4.2.1';
  var DATA_KEY$5 = 'bs.modal';
  var EVENT_KEY$5 = "." + DATA_KEY$5;
  var DATA_API_KEY$5 = '.data-api';
@ -2219,6 +2241,8 @@

      this._element.removeAttribute('aria-hidden');

+      this._element.setAttribute('aria-modal', true);
+
      this._element.scrollTop = 0;

      if (transition) {
@ -2298,6 +2322,8 @@

      this._element.setAttribute('aria-hidden', true);

+      this._element.removeAttribute('aria-modal');
+
      this._isTransitioning = false;

      this._showBackdrop(function () {
@ -2575,7 +2601,7 @@
   */

  var NAME$6 = 'tooltip';
-  var VERSION$6 = '4.1.3';
+  var VERSION$6 = '4.2.1';
  var DATA_KEY$6 = 'bs.tooltip';
  var EVENT_KEY$6 = "." + DATA_KEY$6;
  var JQUERY_NO_CONFLICT$6 = $.fn[NAME$6];
@ -2764,7 +2790,8 @@

      if (this.isWithContent() && this._isEnabled) {
        $(this.element).trigger(showEvent);
-        var isInTheDom = $.contains(this.element.ownerDocument.documentElement, this.element);
+        var shadowRoot = Util.findShadowRoot(this.element);
+        var isInTheDom = $.contains(shadowRoot !== null ? shadowRoot : this.element.ownerDocument.documentElement, this.element);

        if (showEvent.isDefaultPrevented() || !isInTheDom) {
          return;
@ -2785,7 +2812,9 @@
        var attachment = this._getAttachment(placement);

        this.addAttachmentClass(attachment);
-        var container = this.config.container === false ? document.body : $(document).find(this.config.container);
+
+        var container = this._getContainer();
+
        $(tip).data(this.constructor.DATA_KEY, this);

        if (!$.contains(this.element.ownerDocument.documentElement, this.tip)) {
@ -2957,6 +2986,18 @@
    }; // Private


+    _proto._getContainer = function _getContainer() {
+      if (this.config.container === false) {
+        return document.body;
+      }
+
+      if (Util.isElement(this.config.container)) {
+        return $(this.config.container);
+      }
+
+      return $(document).find(this.config.container);
+    };
+
    _proto._getAttachment = function _getAttachment(placement) {
      return AttachmentMap$1[placement.toUpperCase()];
    };
@ -3236,7 +3277,7 @@
   */

  var NAME$7 = 'popover';
-  var VERSION$7 = '4.1.3';
+  var VERSION$7 = '4.2.1';
  var DATA_KEY$7 = 'bs.popover';
  var EVENT_KEY$7 = "." + DATA_KEY$7;
  var JQUERY_NO_CONFLICT$7 = $.fn[NAME$7];
@ -3423,7 +3464,7 @@
   */

  var NAME$8 = 'scrollspy';
-  var VERSION$8 = '4.1.3';
+  var VERSION$8 = '4.2.1';
  var DATA_KEY$8 = 'bs.scrollspy';
  var EVENT_KEY$8 = "." + DATA_KEY$8;
  var DATA_API_KEY$6 = '.data-api';
@ -3730,7 +3771,7 @@
   */

  var NAME$9 = 'tab';
-  var VERSION$9 = '4.1.3';
+  var VERSION$9 = '4.2.1';
  var DATA_KEY$9 = 'bs.tab';
  var EVENT_KEY$9 = "." + DATA_KEY$9;
  var DATA_API_KEY$7 = '.data-api';
@ -3962,7 +4003,7 @@
   */

  var NAME$a = 'toast';
-  var VERSION$a = '4.1.3';
+  var VERSION$a = '4.2.1';
  var DATA_KEY$a = 'bs.toast';
  var EVENT_KEY$a = "." + DATA_KEY$a;
  var JQUERY_NO_CONFLICT$a = $.fn[NAME$a];
@ -3976,7 +4017,8 @@
  var ClassName$a = {
    FADE: 'fade',
    HIDE: 'hide',
-    SHOW: 'show'
+    SHOW: 'show',
+    SHOWING: 'showing'
  };
  var DefaultType$7 = {
    animation: 'boolean',
@ -4023,6 +4065,10 @@
      }

      var complete = function complete() {
+        _this._element.classList.remove(ClassName$a.SHOWING);
+
+        _this._element.classList.add(ClassName$a.SHOW);
+
        $(_this._element).trigger(Event$a.SHOWN);

        if (_this._config.autohide) {
@ -4030,7 +4076,9 @@
        }
      };

-      this._element.classList.add(ClassName$a.SHOW);
+      this._element.classList.remove(ClassName$a.HIDE);
+
+      this._element.classList.add(ClassName$a.SHOWING);

      if (this._config.animation) {
        var transitionDuration = Util.getTransitionDurationFromElement(this._element);
@ -4091,6 +4139,8 @@
      var _this4 = this;

      var complete = function complete() {
+        _this4._element.classList.add(ClassName$a.HIDE);
+
        $(_this4._element).trigger(Event$a.HIDDEN);
      };

@ -4158,7 +4208,7 @@

  /**
   * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.3): index.js
+   * Bootstrap (v4.2.1): index.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
--- a/dist/js/bootstrap.js.map
+++ b/dist/js/bootstrap.js.map
--- a/dist/js/bootstrap.min.js
+++ b/dist/js/bootstrap.min.js
--- a/dist/js/bootstrap.min.js.map
+++ b/dist/js/bootstrap.min.js.map
--- a/js/dist/alert.js
+++ b/js/dist/alert.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap alert.js v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap alert.js v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -35,7 +35,7 @@
   */

  var NAME = 'alert';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.alert';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
--- a/js/dist/alert.js.map
+++ b/js/dist/alert.js.map
--- a/js/dist/button.js
+++ b/js/dist/button.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap button.js v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap button.js v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -34,7 +34,7 @@
   */

  var NAME = 'button';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.button';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
@ -47,7 +47,7 @@
  var Selector = {
    DATA_TOGGLE_CARROT: '[data-toggle^="button"]',
    DATA_TOGGLE: '[data-toggle="buttons"]',
-    INPUT: 'input',
+    INPUT: 'input:not([type="hidden"])',
    ACTIVE: '.active',
    BUTTON: '.btn'
  };
--- a/js/dist/button.js.map
+++ b/js/dist/button.js.map
--- a/js/dist/carousel.js
+++ b/js/dist/carousel.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap carousel.js v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap carousel.js v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -69,7 +69,7 @@
   */

  var NAME = 'carousel';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.carousel';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
--- a/js/dist/carousel.js.map
+++ b/js/dist/carousel.js.map
--- a/js/dist/collapse.js
+++ b/js/dist/collapse.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap collapse.js v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap collapse.js v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -69,7 +69,7 @@
   */

  var NAME = 'collapse';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.collapse';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
--- a/js/dist/collapse.js.map
+++ b/js/dist/collapse.js.map
--- a/js/dist/dropdown.js
+++ b/js/dist/dropdown.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap dropdown.js v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap dropdown.js v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -70,7 +70,7 @@
   */

  var NAME = 'dropdown';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.dropdown';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
@ -502,7 +502,7 @@

      var isActive = $(parent).hasClass(ClassName.SHOW);

-      if (!isActive && (event.which !== ESCAPE_KEYCODE || event.which !== SPACE_KEYCODE) || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
+      if (!isActive || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
        if (event.which === ESCAPE_KEYCODE) {
          var toggle = parent.querySelector(Selector.DATA_TOGGLE);
          $(toggle).trigger('focus');
--- a/js/dist/dropdown.js.map
+++ b/js/dist/dropdown.js.map
--- a/js/dist/index.js
+++ b/js/dist/index.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): index.js
+ * Bootstrap (v4.2.1): index.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
--- a/js/dist/modal.js
+++ b/js/dist/modal.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap modal.js v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap modal.js v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -69,7 +69,7 @@
   */

  var NAME = 'modal';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.modal';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
@ -285,6 +285,8 @@

      this._element.removeAttribute('aria-hidden');

+      this._element.setAttribute('aria-modal', true);
+
      this._element.scrollTop = 0;

      if (transition) {
@ -364,6 +366,8 @@

      this._element.setAttribute('aria-hidden', true);

+      this._element.removeAttribute('aria-modal');
+
      this._isTransitioning = false;

      this._showBackdrop(function () {
--- a/js/dist/modal.js.map
+++ b/js/dist/modal.js.map
--- a/js/dist/popover.js
+++ b/js/dist/popover.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap popover.js v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap popover.js v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -75,7 +75,7 @@
   */

  var NAME = 'popover';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.popover';
  var EVENT_KEY = "." + DATA_KEY;
  var JQUERY_NO_CONFLICT = $.fn[NAME];
--- a/js/dist/popover.js.map
+++ b/js/dist/popover.js.map
--- a/js/dist/scrollspy.js
+++ b/js/dist/scrollspy.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap scrollspy.js v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap scrollspy.js v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -69,7 +69,7 @@
   */

  var NAME = 'scrollspy';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.scrollspy';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
--- a/js/dist/scrollspy.js.map
+++ b/js/dist/scrollspy.js.map
--- a/js/dist/tab.js
+++ b/js/dist/tab.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap tab.js v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap tab.js v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -35,7 +35,7 @@
   */

  var NAME = 'tab';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.tab';
  var EVENT_KEY = "." + DATA_KEY;
  var DATA_API_KEY = '.data-api';
--- a/js/dist/tab.js.map
+++ b/js/dist/tab.js.map
--- a/js/dist/toast.js
+++ b/js/dist/toast.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap toast.js v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap toast.js v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -69,7 +69,7 @@
   */

  var NAME = 'toast';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.toast';
  var EVENT_KEY = "." + DATA_KEY;
  var JQUERY_NO_CONFLICT = $.fn[NAME];
@ -83,7 +83,8 @@
  var ClassName = {
    FADE: 'fade',
    HIDE: 'hide',
-    SHOW: 'show'
+    SHOW: 'show',
+    SHOWING: 'showing'
  };
  var DefaultType = {
    animation: 'boolean',
@ -130,6 +131,10 @@
      }

      var complete = function complete() {
+        _this._element.classList.remove(ClassName.SHOWING);
+
+        _this._element.classList.add(ClassName.SHOW);
+
        $(_this._element).trigger(Event.SHOWN);

        if (_this._config.autohide) {
@ -137,7 +142,9 @@
        }
      };

-      this._element.classList.add(ClassName.SHOW);
+      this._element.classList.remove(ClassName.HIDE);
+
+      this._element.classList.add(ClassName.SHOWING);

      if (this._config.animation) {
        var transitionDuration = Util.getTransitionDurationFromElement(this._element);
@ -198,6 +205,8 @@
      var _this4 = this;

      var complete = function complete() {
+        _this4._element.classList.add(ClassName.HIDE);
+
        $(_this4._element).trigger(Event.HIDDEN);
      };

--- a/js/dist/toast.js.map
+++ b/js/dist/toast.js.map
--- a/js/dist/tooltip.js
+++ b/js/dist/tooltip.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap tooltip.js v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap tooltip.js v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -70,7 +70,7 @@
   */

  var NAME = 'tooltip';
-  var VERSION = '4.1.3';
+  var VERSION = '4.2.1';
  var DATA_KEY = 'bs.tooltip';
  var EVENT_KEY = "." + DATA_KEY;
  var JQUERY_NO_CONFLICT = $.fn[NAME];
@ -259,7 +259,8 @@

      if (this.isWithContent() && this._isEnabled) {
        $(this.element).trigger(showEvent);
-        var isInTheDom = $.contains(this.element.ownerDocument.documentElement, this.element);
+        var shadowRoot = Util.findShadowRoot(this.element);
+        var isInTheDom = $.contains(shadowRoot !== null ? shadowRoot : this.element.ownerDocument.documentElement, this.element);

        if (showEvent.isDefaultPrevented() || !isInTheDom) {
          return;
@ -280,7 +281,9 @@
        var attachment = this._getAttachment(placement);

        this.addAttachmentClass(attachment);
-        var container = this.config.container === false ? document.body : $(document).find(this.config.container);
+
+        var container = this._getContainer();
+
        $(tip).data(this.constructor.DATA_KEY, this);

        if (!$.contains(this.element.ownerDocument.documentElement, this.tip)) {
@ -452,6 +455,18 @@
    }; // Private


+    _proto._getContainer = function _getContainer() {
+      if (this.config.container === false) {
+        return document.body;
+      }
+
+      if (Util.isElement(this.config.container)) {
+        return $(this.config.container);
+      }
+
+      return $(document).find(this.config.container);
+    };
+
    _proto._getAttachment = function _getAttachment(placement) {
      return AttachmentMap[placement.toUpperCase()];
    };
--- a/js/dist/tooltip.js.map
+++ b/js/dist/tooltip.js.map
--- a/js/dist/util.js
+++ b/js/dist/util.js
@ -1,5 +1,5 @@
 /*!
-  * Bootstrap util.js v4.1.3 (https://getbootstrap.com/)
+  * Bootstrap util.js v4.2.1 (https://getbootstrap.com/)
  * Copyright 2011-2018 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
@ -13,7 +13,7 @@

  /**
   * --------------------------------------------------------------------------
-   * Bootstrap (v4.1.3): util.js
+   * Bootstrap (v4.2.1): util.js
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
   * --------------------------------------------------------------------------
   */
@ -136,6 +136,28 @@
          }
        }
      }
+    },
+    findShadowRoot: function findShadowRoot(element) {
+      if (!document.documentElement.attachShadow) {
+        return null;
+      } // Can find the shadow root otherwise it'll return the document
+
+
+      if (typeof element.getRootNode === 'function') {
+        var root = element.getRootNode();
+        return root instanceof ShadowRoot ? root : null;
+      }
+
+      if (element instanceof ShadowRoot) {
+        return element;
+      } // when we don't find a shadow root
+
+
+      if (!element.parentNode) {
+        return null;
+      }
+
+      return Util.findShadowRoot(element.parentNode);
    }
  };
  setTransitionEndSupport();
--- a/js/dist/util.js.map
+++ b/js/dist/util.js.map
--- a/js/src/alert.js
+++ b/js/src/alert.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): alert.js
+ * Bootstrap (v4.2.1): alert.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
@ -15,7 +15,7 @@ import Util from './util'
 */

 const NAME                = 'alert'
-const VERSION             = '4.1.3'
+const VERSION             = '4.2.1'
 const DATA_KEY            = 'bs.alert'
 const EVENT_KEY           = `.${DATA_KEY}`
 const DATA_API_KEY        = '.data-api'
--- a/js/src/button.js
+++ b/js/src/button.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): button.js
+ * Bootstrap (v4.2.1): button.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
@ -14,7 +14,7 @@ import $ from 'jquery'
 */

 const NAME                = 'button'
-const VERSION             = '4.1.3'
+const VERSION             = '4.2.1'
 const DATA_KEY            = 'bs.button'
 const EVENT_KEY           = `.${DATA_KEY}`
 const DATA_API_KEY        = '.data-api'
@ -29,7 +29,7 @@ const ClassName = {
 const Selector = {
  DATA_TOGGLE_CARROT : '[data-toggle^="button"]',
  DATA_TOGGLE        : '[data-toggle="buttons"]',
-  INPUT              : 'input',
+  INPUT              : 'input:not([type="hidden"])',
  ACTIVE             : '.active',
  BUTTON             : '.btn'
 }
--- a/js/src/carousel.js
+++ b/js/src/carousel.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): carousel.js
+ * Bootstrap (v4.2.1): carousel.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
@ -15,7 +15,7 @@ import Util from './util'
 */

 const NAME                   = 'carousel'
-const VERSION                = '4.1.3'
+const VERSION                = '4.2.1'
 const DATA_KEY               = 'bs.carousel'
 const EVENT_KEY              = `.${DATA_KEY}`
 const DATA_API_KEY           = '.data-api'
--- a/js/src/collapse.js
+++ b/js/src/collapse.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): collapse.js
+ * Bootstrap (v4.2.1): collapse.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
@ -15,7 +15,7 @@ import Util from './util'
 */

 const NAME                = 'collapse'
-const VERSION             = '4.1.3'
+const VERSION             = '4.2.1'
 const DATA_KEY            = 'bs.collapse'
 const EVENT_KEY           = `.${DATA_KEY}`
 const DATA_API_KEY        = '.data-api'
--- a/js/src/dropdown.js
+++ b/js/src/dropdown.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): dropdown.js
+ * Bootstrap (v4.2.1): dropdown.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
@ -16,7 +16,7 @@ import Util from './util'
 */

 const NAME                     = 'dropdown'
-const VERSION                  = '4.1.3'
+const VERSION                  = '4.2.1'
 const DATA_KEY                 = 'bs.dropdown'
 const EVENT_KEY                = `.${DATA_KEY}`
 const DATA_API_KEY             = '.data-api'
@ -468,8 +468,7 @@ class Dropdown {
    const parent   = Dropdown._getParentFromElement(this)
    const isActive = $(parent).hasClass(ClassName.SHOW)

-    if (!isActive && (event.which !== ESCAPE_KEYCODE || event.which !== SPACE_KEYCODE) ||
-          isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
+    if (!isActive || isActive && (event.which === ESCAPE_KEYCODE || event.which === SPACE_KEYCODE)) {
      if (event.which === ESCAPE_KEYCODE) {
        const toggle = parent.querySelector(Selector.DATA_TOGGLE)
        $(toggle).trigger('focus')
--- a/js/src/index.js
+++ b/js/src/index.js
@ -14,7 +14,7 @@ import Util from './util'

 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): index.js
+ * Bootstrap (v4.2.1): index.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
--- a/js/src/modal.js
+++ b/js/src/modal.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): modal.js
+ * Bootstrap (v4.2.1): modal.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
@ -15,7 +15,7 @@ import Util from './util'
 */

 const NAME               = 'modal'
-const VERSION            = '4.1.3'
+const VERSION            = '4.2.1'
 const DATA_KEY           = 'bs.modal'
 const EVENT_KEY          = `.${DATA_KEY}`
 const DATA_API_KEY       = '.data-api'
@ -243,6 +243,7 @@ class Modal {

    this._element.style.display = 'block'
    this._element.removeAttribute('aria-hidden')
+    this._element.setAttribute('aria-modal', true)
    this._element.scrollTop = 0

    if (transition) {
@ -314,6 +315,7 @@ class Modal {
  _hideModal() {
    this._element.style.display = 'none'
    this._element.setAttribute('aria-hidden', true)
+    this._element.removeAttribute('aria-modal')
    this._isTransitioning = false
    this._showBackdrop(() => {
      $(document.body).removeClass(ClassName.OPEN)
--- a/js/src/popover.js
+++ b/js/src/popover.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): popover.js
+ * Bootstrap (v4.2.1): popover.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
@ -15,7 +15,7 @@ import Tooltip from './tooltip'
 */

 const NAME                = 'popover'
-const VERSION             = '4.1.3'
+const VERSION             = '4.2.1'
 const DATA_KEY            = 'bs.popover'
 const EVENT_KEY           = `.${DATA_KEY}`
 const JQUERY_NO_CONFLICT  = $.fn[NAME]
--- a/js/src/scrollspy.js
+++ b/js/src/scrollspy.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): scrollspy.js
+ * Bootstrap (v4.2.1): scrollspy.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
@ -15,7 +15,7 @@ import Util from './util'
 */

 const NAME               = 'scrollspy'
-const VERSION            = '4.1.3'
+const VERSION            = '4.2.1'
 const DATA_KEY           = 'bs.scrollspy'
 const EVENT_KEY          = `.${DATA_KEY}`
 const DATA_API_KEY       = '.data-api'
--- a/js/src/tab.js
+++ b/js/src/tab.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): tab.js
+ * Bootstrap (v4.2.1): tab.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
@ -15,7 +15,7 @@ import Util from './util'
 */

 const NAME               = 'tab'
-const VERSION            = '4.1.3'
+const VERSION            = '4.2.1'
 const DATA_KEY           = 'bs.tab'
 const EVENT_KEY          = `.${DATA_KEY}`
 const DATA_API_KEY       = '.data-api'
--- a/js/src/toast.js
+++ b/js/src/toast.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): toast.js
+ * Bootstrap (v4.2.1): toast.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
@ -15,7 +15,7 @@ import Util from './util'
 */

 const NAME               = 'toast'
-const VERSION            = '4.1.3'
+const VERSION            = '4.2.1'
 const DATA_KEY           = 'bs.toast'
 const EVENT_KEY          = `.${DATA_KEY}`
 const JQUERY_NO_CONFLICT = $.fn[NAME]
@ -29,9 +29,10 @@ const Event = {
 }

 const ClassName = {
-  FADE : 'fade',
-  HIDE : 'hide',
-  SHOW : 'show'
+  FADE    : 'fade',
+  HIDE    : 'hide',
+  SHOW    : 'show',
+  SHOWING : 'showing'
 }

 const DefaultType = {
@ -84,6 +85,9 @@ class Toast {
    }

    const complete = () => {
+      this._element.classList.remove(ClassName.SHOWING)
+      this._element.classList.add(ClassName.SHOW)
+
      $(this._element).trigger(Event.SHOWN)

      if (this._config.autohide) {
@ -91,7 +95,8 @@ class Toast {
      }
    }

-    this._element.classList.add(ClassName.SHOW)
+    this._element.classList.remove(ClassName.HIDE)
+    this._element.classList.add(ClassName.SHOWING)
    if (this._config.animation) {
      const transitionDuration = Util.getTransitionDurationFromElement(this._element)

@ -162,11 +167,11 @@ class Toast {

  _close() {
    const complete = () => {
+      this._element.classList.add(ClassName.HIDE)
      $(this._element).trigger(Event.HIDDEN)
    }

    this._element.classList.remove(ClassName.SHOW)
-
    if (this._config.animation) {
      const transitionDuration = Util.getTransitionDurationFromElement(this._element)

--- a/js/src/tooltip.js
+++ b/js/src/tooltip.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): tooltip.js
+ * Bootstrap (v4.2.1): tooltip.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
@ -16,7 +16,7 @@ import Util from './util'
 */

 const NAME               = 'tooltip'
-const VERSION            = '4.1.3'
+const VERSION            = '4.2.1'
 const DATA_KEY           = 'bs.tooltip'
 const EVENT_KEY          = `.${DATA_KEY}`
 const JQUERY_NO_CONFLICT = $.fn[NAME]
@ -244,8 +244,9 @@ class Tooltip {
    if (this.isWithContent() && this._isEnabled) {
      $(this.element).trigger(showEvent)

+      const shadowRoot = Util.findShadowRoot(this.element)
      const isInTheDom = $.contains(
-        this.element.ownerDocument.documentElement,
+        shadowRoot !== null ? shadowRoot : this.element.ownerDocument.documentElement,
        this.element
      )

@ -272,8 +273,7 @@ class Tooltip {
      const attachment = this._getAttachment(placement)
      this.addAttachmentClass(attachment)

-      const container = this.config.container === false ? document.body : $(document).find(this.config.container)
-
+      const container = this._getContainer()
      $(tip).data(this.constructor.DATA_KEY, this)

      if (!$.contains(this.element.ownerDocument.documentElement, this.tip)) {
@ -450,6 +450,18 @@ class Tooltip {

  // Private

+  _getContainer() {
+    if (this.config.container === false) {
+      return document.body
+    }
+
+    if (Util.isElement(this.config.container)) {
+      return $(this.config.container)
+    }
+
+    return $(document).find(this.config.container)
+  }
+
  _getAttachment(placement) {
    return AttachmentMap[placement.toUpperCase()]
  }
--- a/js/src/util.js
+++ b/js/src/util.js
@ -1,6 +1,6 @@
 /**
 * --------------------------------------------------------------------------
- * Bootstrap (v4.1.3): util.js
+ * Bootstrap (v4.2.1): util.js
 * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 * --------------------------------------------------------------------------
 */
@ -142,6 +142,29 @@ const Util = {
        }
      }
    }
+  },
+
+  findShadowRoot(element) {
+    if (!document.documentElement.attachShadow) {
+      return null
+    }
+
+    // Can find the shadow root otherwise it'll return the document
+    if (typeof element.getRootNode === 'function') {
+      const root = element.getRootNode()
+      return root instanceof ShadowRoot ? root : null
+    }
+
+    if (element instanceof ShadowRoot) {
+      return element
+    }
+
+    // when we don't find a shadow root
+    if (!element.parentNode) {
+      return null
+    }
+
+    return Util.findShadowRoot(element.parentNode)
  }
 }

--- a/js/tests/index.html
+++ b/js/tests/index.html
@ -8,7 +8,7 @@
    <!-- jQuery -->
    <script>
      (function () {
-        var path = '../../site/docs/4.1/assets/js/vendor/jquery-slim.min.js'
+        var path = '../../site/docs/4.2/assets/js/vendor/jquery-slim.min.js'
        // get jquery param from the query string.
        var jQueryVersion = location.search.match(/[?&]jquery=(.*?)(?=&|$)/)

--- a/js/tests/integration/bundle.js
+++ b/js/tests/integration/bundle.js
@ -0,0 +1,8 @@
+import 'popper.js'
+import $ from 'jquery'
+import bootstrap from '../../../dist/js/bootstrap'
+
+$(() => {
+  $('#resultUID').text(bootstrap.Util.getUID('bs'))
+  $('[data-toggle="tooltip"]').tooltip()
+})
--- a/js/tests/integration/index.html
+++ b/js/tests/integration/index.html
@ -0,0 +1,66 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <!-- Required meta tags -->
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
+
+    <!-- Bootstrap CSS -->
+    <link rel="stylesheet" href="../../../dist/css/bootstrap.min.css">
+
+    <title>Hello, world!</title>
+  </head>
+  <body>
+    <div class="container">
+      <h1>Hello, world!</h1>
+      <div class="col-12">
+        <div class="mt-5 mb-3">
+          <span>Util.getUID: </span>
+          <span id="resultUID"></span>
+        </div>
+        <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="top" title="Tooltip on top">
+          Tooltip on top
+        </button>
+        <div id="carouselExampleCaptions" class="carousel slide mt-2" data-ride="carousel">
+          <ol class="carousel-indicators">
+            <li data-target="#carouselExampleCaptions" data-slide-to="0"></li>
+            <li data-target="#carouselExampleCaptions" data-slide-to="1" class="active"></li>
+            <li data-target="#carouselExampleCaptions" data-slide-to="2"></li>
+          </ol>
+          <div class="carousel-inner">
+            <div class="carousel-item">
+              <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&amp;bg=777&amp;fg=555&amp;text=First slide" alt="First slide [800x400]" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22800%22%20height%3D%22400%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20800%20400%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_167a6f826cb%20text%20%7B%20fill%3A%23555%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A40pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_167a6f826cb%22%3E%3Crect%20width%3D%22800%22%20height%3D%22400%22%20fill%3D%22%23777%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%22285.921875%22%20y%3D%22217.7%22%3EFirst%20slide%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E" data-holder-rendered="true">
+              <div class="carousel-caption d-none d-md-block">
+                <h5>First slide label</h5>
+                <p>Nulla vitae elit libero, a pharetra augue mollis interdum.</p>
+              </div>
+            </div>
+            <div class="carousel-item active">
+              <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&amp;bg=666&amp;fg=444&amp;text=Second slide" alt="Second slide [800x400]" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22800%22%20height%3D%22400%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20800%20400%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_167a6f826ce%20text%20%7B%20fill%3A%23444%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A40pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_167a6f826ce%22%3E%3Crect%20width%3D%22800%22%20height%3D%22400%22%20fill%3D%22%23666%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%22247.3203125%22%20y%3D%22217.7%22%3ESecond%20slide%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E" data-holder-rendered="true">
+              <div class="carousel-caption d-none d-md-block">
+                <h5>Second slide label</h5>
+                <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
+              </div>
+            </div>
+            <div class="carousel-item">
+              <img class="d-block w-100" data-src="holder.js/800x400?auto=yes&amp;bg=555&amp;fg=333&amp;text=Third slide" alt="Third slide [800x400]" src="data:image/svg+xml;charset=UTF-8,%3Csvg%20width%3D%22800%22%20height%3D%22400%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20viewBox%3D%220%200%20800%20400%22%20preserveAspectRatio%3D%22none%22%3E%3Cdefs%3E%3Cstyle%20type%3D%22text%2Fcss%22%3E%23holder_167a6f826cf%20text%20%7B%20fill%3A%23333%3Bfont-weight%3Anormal%3Bfont-family%3AHelvetica%2C%20monospace%3Bfont-size%3A40pt%20%7D%20%3C%2Fstyle%3E%3C%2Fdefs%3E%3Cg%20id%3D%22holder_167a6f826cf%22%3E%3Crect%20width%3D%22800%22%20height%3D%22400%22%20fill%3D%22%23555%22%3E%3C%2Frect%3E%3Cg%3E%3Ctext%20x%3D%22277%22%20y%3D%22217.7%22%3EThird%20slide%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fg%3E%3C%2Fsvg%3E" data-holder-rendered="true">
+              <div class="carousel-caption d-none d-md-block">
+                <h5>Third slide label</h5>
+                <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur.</p>
+              </div>
+            </div>
+          </div>
+          <a class="carousel-control-prev" href="#carouselExampleCaptions" role="button" data-slide="prev">
+            <span class="carousel-control-prev-icon" aria-hidden="true"></span>
+            <span class="sr-only">Previous</span>
+          </a>
+          <a class="carousel-control-next" href="#carouselExampleCaptions" role="button" data-slide="next">
+            <span class="carousel-control-next-icon" aria-hidden="true"></span>
+            <span class="sr-only">Next</span>
+          </a>
+        </div>
+      </div>
+    </div>
+    <script src="../../coverage/bundle.js"></script>
+  </body>
+</html>
--- a/js/tests/integration/rollup.bundle.js
+++ b/js/tests/integration/rollup.bundle.js
@ -0,0 +1,20 @@
+/* eslint-env node */
+
+const resolve = require('rollup-plugin-node-resolve')
+const commonjs = require('rollup-plugin-commonjs')
+const babel = require('rollup-plugin-babel')
+
+module.exports = {
+  input: 'js/tests/integration/bundle.js',
+  output: {
+    file: 'js/coverage/bundle.js',
+    format: 'iife'
+  },
+  plugins: [
+    resolve(),
+    commonjs(),
+    babel({
+      exclude: 'node_modules/**'
+    })
+  ]
+}
--- a/js/tests/karma.conf.js
+++ b/js/tests/karma.conf.js
@ -1,6 +1,8 @@
 /* eslint-env node */
 /* eslint no-process-env: 0 */
+
 const ip = require('ip')
+const pkg = require('../../package.json')
 const {
  browsers,
  browsersKeys
@ -8,7 +10,7 @@ const {
 const path = require('path')
 const jsCoveragePath = path.resolve(__dirname, '../coverage')

-const jqueryFile = process.env.USE_OLD_JQUERY ? 'https://code.jquery.com/jquery-1.9.1.min.js' : 'site/docs/4.1/assets/js/vendor/jquery-slim.min.js'
+const jqueryFile = process.env.USE_OLD_JQUERY ? 'https://code.jquery.com/jquery-1.9.1.min.js' : `site/docs/${pkg.version_short}/assets/js/vendor/jquery-slim.min.js`
 const bundle = process.env.BUNDLE === 'true'
 const browserStack = process.env.BROWSER === 'true'

@ -92,7 +94,7 @@ if (bundle) {
  conf.browsers = browsersKeys
  reporters.push('BrowserStack')
  files = files.concat([
-    'site/docs/4.1/assets/js/vendor/jquery-slim.min.js',
+    `site/docs/${pkg.version_short}/assets/js/vendor/jquery-slim.min.js`,
    'js/dist/util.js',
    'js/dist/tooltip.js',
    'js/dist/!(util|index|tooltip).js' // include all of our js/dist files except util.js, index.js and tooltip.js
--- a/js/tests/unit/.eslintrc.json
+++ b/js/tests/unit/.eslintrc.json
@ -20,7 +20,7 @@
  },
  "extends": "../../../.eslintrc.json",
  "rules": {
-    "no-console": "off",
+    "no-console": "error",
    // Best Practices
    "consistent-return": "off",
    "no-magic-numbers": "off",
--- a/js/tests/unit/button.js
+++ b/js/tests/unit/button.js
@ -139,6 +139,29 @@ $(function () {
    assert.ok($btn2.find('input').prop('checked'), 'btn2 is checked')
  })

+  QUnit.test('should only toggle selectable inputs', function (assert) {
+    assert.expect(6)
+    var groupHTML = '<div class="btn-group" data-toggle="buttons">' +
+      '<label class="btn btn-primary active">' +
+      '<input type="hidden" name="option1" id="option1-default" value="false">' +
+      '<input type="checkbox" name="option1" id="option1" checked="true"> Option 1' +
+      '</label>' +
+      '</div>'
+    var $group = $(groupHTML).appendTo('#qunit-fixture')
+
+    var $btn = $group.children().eq(0)
+    var $hidden = $btn.find('input#option1-default')
+    var $cb = $btn.find('input#option1')
+
+    assert.ok($btn.hasClass('active'), 'btn has active class')
+    assert.ok($cb.prop('checked'), 'btn is checked')
+    assert.ok(!$hidden.prop('checked'), 'hidden is not checked')
+    $btn.trigger('click')
+    assert.ok(!$btn.hasClass('active'), 'btn does not have active class')
+    assert.ok(!$cb.prop('checked'), 'btn is not checked')
+    assert.ok(!$hidden.prop('checked'), 'hidden is not checked') // should not be changed
+  })
+
  QUnit.test('should not add aria-pressed on labels for radio/checkbox inputs in a data-toggle="buttons" group', function (assert) {
    assert.expect(2)
    var groupHTML = '<div class="btn-group" data-toggle="buttons">' +
--- a/js/tests/unit/modal.js
+++ b/js/tests/unit/modal.js
@ -280,6 +280,23 @@ $(function () {
      .bootstrapModal('show')
  })

+  QUnit.test('should add aria-modal attribute when shown, remove it again when hidden', function (assert) {
+    assert.expect(3)
+    var done = assert.async()
+
+    $('<div id="modal-test"/>')
+      .on('shown.bs.modal', function () {
+        assert.ok($('#modal-test').is('[aria-modal]'), 'aria-modal attribute added')
+        assert.strictEqual($('#modal-test').attr('aria-modal'), 'true', 'correct aria-modal="true" added')
+        $(this).bootstrapModal('hide')
+      })
+      .on('hidden.bs.modal', function () {
+        assert.notOk($('#modal-test').is('[aria-modal]'), 'aria-modal attribute removed')
+        done()
+      })
+      .bootstrapModal('show')
+  })
+
  QUnit.test('should close reopened modal with [data-dismiss="modal"] click', function (assert) {
    assert.expect(2)
    var done = assert.async()
--- a/js/tests/unit/tooltip.js
+++ b/js/tests/unit/tooltip.js
@ -414,6 +414,52 @@ $(function () {
      .bootstrapTooltip('show')
  })

+  QUnit.test('should place tooltips inside a specific container when container is an element', function (assert) {
+    assert.expect(3)
+    var done = assert.async()
+    var $container = $('<div></div>').appendTo('#qunit-fixture')
+    var $tooltip = $('<a href="#" rel="tooltip" title="Another tooltip"/>')
+      .appendTo('#qunit-fixture')
+      .bootstrapTooltip({
+        container: $container[0]
+      })
+
+    $tooltip
+      .one('shown.bs.tooltip', function () {
+        assert.strictEqual($container.find('.tooltip').length, 1)
+        assert.strictEqual($('#qunit-fixture > .tooltip').length, 0, 'tooltip is not in parent')
+        $tooltip.bootstrapTooltip('hide')
+      })
+      .one('hidden.bs.tooltip', function () {
+        assert.strictEqual($container.find('.tooltip').length, 0, 'tooltip was removed from dom')
+        done()
+      })
+      .bootstrapTooltip('show')
+  })
+
+  QUnit.test('should place tooltips inside a specific container when container is a selector', function (assert) {
+    assert.expect(3)
+    var done = assert.async()
+    var $container = $('<div id="container"></div>').appendTo('#qunit-fixture')
+    var $tooltip = $('<a href="#" rel="tooltip" title="Another tooltip"/>')
+      .appendTo('#qunit-fixture')
+      .bootstrapTooltip({
+        container: '#container'
+      })
+
+    $tooltip
+      .one('shown.bs.tooltip', function () {
+        assert.strictEqual($container.find('.tooltip').length, 1)
+        assert.strictEqual($('#qunit-fixture > .tooltip').length, 0, 'tooltip is not in parent')
+        $tooltip.bootstrapTooltip('hide')
+      })
+      .one('hidden.bs.tooltip', function () {
+        assert.strictEqual($container.find('.tooltip').length, 0, 'tooltip was removed from dom')
+        done()
+      })
+      .bootstrapTooltip('show')
+  })
+
  QUnit.test('should add position class before positioning so that position-specific styles are taken into account', function (assert) {
    assert.expect(2)
    var done = assert.async()
@ -517,7 +563,6 @@ $(function () {
      $tooltip.bootstrapTooltip('show')
    } catch (err) {
      passed = false
-      console.log(err)
    }

    assert.ok(passed, '.tooltip(\'show\') should not throw an error if element no longer is in dom')
--- a/js/tests/unit/util.js
+++ b/js/tests/unit/util.js
@ -124,4 +124,41 @@ $(function () {
    assert.expect(1)
    assert.ok(Util.supportsTransitionEnd())
  })
+
+  QUnit.test('Util.findShadowRoot should find the shadow DOM root', function (assert) {
+    // Only for newer browsers
+    if (!document.documentElement.attachShadow) {
+      assert.expect(0)
+      return
+    }
+
+    assert.expect(2)
+    var $div = $('<div id="test"></div>').appendTo($('#qunit-fixture'))
+    var shadowRoot = $div[0].attachShadow({
+      mode: 'open'
+    })
+
+    assert.equal(shadowRoot, Util.findShadowRoot(shadowRoot))
+    shadowRoot.innerHTML = '<button>Shadow Button</button>'
+    assert.equal(shadowRoot, Util.findShadowRoot(shadowRoot.firstChild))
+  })
+
+  QUnit.test('Util.findShadowRoot should return null when attachShadow is not available', function (assert) {
+    assert.expect(1)
+
+    var $div = $('<div id="test"></div>').appendTo($('#qunit-fixture'))
+    if (!document.documentElement.attachShadow) {
+      assert.equal(null, Util.findShadowRoot($div[0]))
+    } else {
+      var sandbox = sinon.createSandbox()
+
+      sandbox.replace(document.documentElement, 'attachShadow', function () {
+        // to avoid empty function
+        return $div
+      })
+
+      assert.equal(null, Util.findShadowRoot($div[0]))
+      sandbox.restore()
+    }
+  })
 })
--- a/js/tests/visual/alert.html
+++ b/js/tests/visual/alert.html
@ -51,7 +51,7 @@
      </div>
    </div>

-    <script src="../../../site/docs/4.1/assets/js/vendor/jquery-slim.min.js"></script>
+    <script src="../../../site/docs/4.2/assets/js/vendor/jquery-slim.min.js"></script>
    <script src="../../dist/util.js"></script>
    <script src="../../dist/alert.js"></script>
  </body>
--- a/js/tests/visual/button.html
+++ b/js/tests/visual/button.html
@ -44,7 +44,7 @@
      </div>
    </div>

-    <script src="../../../site/docs/4.1/assets/js/vendor/jquery-slim.min.js"></script>
+    <script src="../../../site/docs/4.2/assets/js/vendor/jquery-slim.min.js"></script>
    <script src="../../dist/util.js"></script>
    <script src="../../dist/button.js"></script>
  </body>
--- a/js/tests/visual/carousel.html
+++ b/js/tests/visual/carousel.html
@ -45,7 +45,7 @@
      </div>
    </div>

-    <script src="../../../site/docs/4.1/assets/js/vendor/jquery-slim.min.js"></script>
+    <script src="../../../site/docs/4.2/assets/js/vendor/jquery-slim.min.js"></script>
    <script src="../../dist/util.js"></script>
    <script src="../../dist/carousel.js"></script>
    <script>
--- a/js/tests/visual/collapse.html
+++ b/js/tests/visual/collapse.html
@ -71,7 +71,7 @@
      </div>
    </div>

-    <script src="../../../site/docs/4.1/assets/js/vendor/jquery-slim.min.js"></script>
+    <script src="../../../site/docs/4.2/assets/js/vendor/jquery-slim.min.js"></script>
    <script src="../../dist/util.js"></script>
    <script src="../../dist/collapse.js"></script>
  </body>
--- a/js/tests/visual/dropdown.html
+++ b/js/tests/visual/dropdown.html
@ -203,7 +203,7 @@

    </div>

-    <script src="../../../site/docs/4.1/assets/js/vendor/jquery-slim.min.js"></script>
+    <script src="../../../site/docs/4.2/assets/js/vendor/jquery-slim.min.js"></script>
    <script src="../../../node_modules/popper.js/dist/umd/popper.min.js"></script>
    <script src="../../dist/util.js"></script>
    <script src="../../dist/dropdown.js"></script>
--- a/js/tests/visual/modal.html
+++ b/js/tests/visual/modal.html
@ -205,7 +205,7 @@
      </button>
    </div>

-    <script src="../../../site/docs/4.1/assets/js/vendor/jquery-slim.min.js"></script>
+    <script src="../../../site/docs/4.2/assets/js/vendor/jquery-slim.min.js"></script>
    <script src="../../../node_modules/popper.js/dist/umd/popper.min.js"></script>
    <script src="../../dist/util.js"></script>
    <script src="../../dist/modal.js"></script>
--- a/js/tests/visual/popover.html
+++ b/js/tests/visual/popover.html
@ -31,7 +31,7 @@
      </button>
    </div>

-    <script src="../../../site/docs/4.1/assets/js/vendor/jquery-slim.min.js"></script>
+    <script src="../../../site/docs/4.2/assets/js/vendor/jquery-slim.min.js"></script>
    <script src="../../../node_modules/popper.js/dist/umd/popper.min.js"></script>
    <script src="../../dist/util.js"></script>
    <script src="../../dist/tooltip.js"></script>
--- a/js/tests/visual/scrollspy.html
+++ b/js/tests/visual/scrollspy.html
@ -86,7 +86,7 @@
      <p>Ad leggings keytar, brunch id art party dolor labore.</p>
    </div>

-    <script src="../../../site/docs/4.1/assets/js/vendor/jquery-slim.min.js"></script>
+    <script src="../../../site/docs/4.2/assets/js/vendor/jquery-slim.min.js"></script>
    <script src="../../dist/util.js"></script>
    <script src="../../dist/scrollspy.js"></script>
    <script src="../../dist/dropdown.js"></script>
--- a/js/tests/visual/tab.html
+++ b/js/tests/visual/tab.html
@ -225,7 +225,7 @@
      </div>
    </div>

-    <script src="../../../site/docs/4.1/assets/js/vendor/jquery-slim.min.js"></script>
+    <script src="../../../site/docs/4.2/assets/js/vendor/jquery-slim.min.js"></script>
    <script src="../../../node_modules/popper.js/dist/umd/popper.min.js"></script>
    <script src="../../dist/util.js"></script>
    <script src="../../dist/tab.js"></script>
--- a/js/tests/visual/toast.html
+++ b/js/tests/visual/toast.html
@ -52,7 +52,7 @@
      </div>
    </div>

-    <script src="../../../site/docs/4.1/assets/js/vendor/jquery-slim.min.js"></script>
+    <script src="../../../site/docs/4.2/assets/js/vendor/jquery-slim.min.js"></script>
    <script src="../../dist/util.js"></script>
    <script src="../../dist/toast.js"></script>
    <script>
--- a/js/tests/visual/tooltip.html
+++ b/js/tests/visual/tooltip.html
@ -51,25 +51,51 @@
          <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="left" title="Tooltip with XSS" data-container="<img src=1 onerror=alert(123) />">
            Tooltip with XSS
          </button>
-          <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="left" title="Tooltip with container" data-container="#customContainer">
-            Tooltip with container
+          <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="left" title="Tooltip with container (selector)" data-container="#customContainer">
+            Tooltip with container (selector)
+          </button>
+          <button id="tooltipElement" type="button" class="btn btn-secondary" data-placement="left" title="Tooltip with container (element)">
+            Tooltip with container (element)
          </button>
          <button type="button" class="btn btn-secondary" data-toggle="tooltip" data-html="true" title="<em>Tooltip</em> <u>with</u> <b>HTML</b>">
            Tooltip with HTML
          </button>
        </p>
      </div>
-      <div id="target" title="Test tooltip on transformed element"></div>
+      <div class="row">
+        <div class="col-sm-3">
+          <div id="target" title="Test tooltip on transformed element"></div>
+        </div>
+        <div id="shadow" class="pt-5"></div>
+      </div>
      <div id="customContainer"></div>
    </div>

-    <script src="../../../site/docs/4.1/assets/js/vendor/jquery-slim.min.js"></script>
+    <script src="../../../site/docs/4.2/assets/js/vendor/jquery-slim.min.js"></script>
    <script src="../../../node_modules/popper.js/dist/umd/popper.min.js"></script>
    <script src="../../dist/util.js"></script>
    <script src="../../dist/tooltip.js"></script>
    <script>
      $(function () {
+        if (typeof document.body.attachShadow === 'function') {
+          var shadowRoot = $('#shadow')[0].attachShadow({ mode: 'open' })
+          shadowRoot.innerHTML =
+            '<button type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="top" title="Tooltip on top in a shadow dom">' +
+            '  Tooltip on top in a shadow dom' +
+            '</button>' +
+            '<button id="secondTooltip" type="button" class="btn btn-secondary" data-toggle="tooltip" data-placement="top" title="Tooltip on top in a shadow dom with container option">' +
+            '  Tooltip on top in a shadow dom' +
+            '</button>'
+
+          $(shadowRoot.firstChild).tooltip()
+          $(shadowRoot.getElementById('secondTooltip')).tooltip({
+            container: shadowRoot
+          })
+        }
        $('[data-toggle="tooltip"]').tooltip()
+        $('#tooltipElement').tooltip({
+          container: $('#customContainer')[0]
+        })
        $('#target').tooltip({
          placement : 'top',
          trigger : 'manual'
--- a/nuget/MyGet.ps1
+++ b/nuget/MyGet.ps1
@ -1,16 +1,17 @@
 # set env vars usually set by MyGet (enable for local testing)
 #$env:SourcesPath = '..'
-#$env:NuGet = "./nuget.exe" #https://dist.nuget.org/win-x86-commandline/latest/nuget.exe
+#$env:NuGet = "./nuget.exe" # https://dist.nuget.org/win-x86-commandline/latest/nuget.exe

 $nuget = $env:NuGet

+Copy-Item $env:SourcesPath\LICENSE $env:SourcesPath\LICENSE.txt # has to be .txt extension, don't check in
+
 # parse the version number out of package.json
 $bsversionParts = ((Get-Content $env:SourcesPath\package.json) -join "`n" | ConvertFrom-Json).version.split('-', 2) # split the version on the '-'
 $bsversion = $bsversionParts[0]

-if ($bsversionParts.Length -gt 1)
-{
-    $bsversion += '-' + $bsversionParts[1].replace('.', '').replace('-', '_')   # strip out invalid chars from the PreRelease part
+if ($bsversionParts.Length -gt 1) {
+  $bsversion += '-' + $bsversionParts[1].replace('.', '').replace('-', '_') # strip out invalid chars from the PreRelease part
 }

 # create packages
--- a/nuget/bootstrap.nuspec
+++ b/nuget/bootstrap.nuspec
@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2011/08/nuspec.xsd">
  <metadata>
    <id>bootstrap</id>
-    <version>4.1.0</version>
+    <version>4.2.0</version>
    <title>Bootstrap CSS</title>
    <authors>The Bootstrap Authors, Twitter Inc.</authors>
    <owners>bootstrap</owners>
@ -11,8 +11,8 @@
    <summary>Bootstrap framework in CSS. Includes fonts and JavaScript</summary>
    <language>en-us</language>
    <projectUrl>https://getbootstrap.com/</projectUrl>
-    <iconUrl>https://getbootstrap.com/docs/4.1/assets/img/favicons/apple-touch-icon.png</iconUrl>
-    <licenseUrl>https://github.com/twbs/bootstrap/blob/master/LICENSE</licenseUrl>
+    <iconUrl>https://getbootstrap.com/docs/4.2/assets/img/favicons/apple-touch-icon.png</iconUrl>
+    <license type="file">LICENSE.txt</license>
    <copyright>Copyright 2017-2018</copyright>
    <requireLicenseAcceptance>false</requireLicenseAcceptance>
    <dependencies>
@ -22,6 +22,8 @@
    <tags>css mobile-first responsive front-end framework web</tags>
  </metadata>
  <files>
+    <file src="LICENSE.txt" target="" />
+
    <file src="dist\css\*.*" target="content\Content" />
    <file src="dist\js\bootstrap*.js" target="content\Scripts" />
    <file src="dist\js\bootstrap*.js.map" target="content\Scripts" />
--- a/nuget/bootstrap.sass.nuspec
+++ b/nuget/bootstrap.sass.nuspec
@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2011/08/nuspec.xsd">
  <metadata>
    <id>bootstrap.sass</id>
-    <version>4.1.0</version>
+    <version>4.2.0</version>
    <title>Bootstrap Sass</title>
    <authors>The Bootstrap Authors, Twitter Inc.</authors>
    <owners>bootstrap</owners>
@ -11,8 +11,8 @@
    <summary>Bootstrap framework in Sass. Includes fonts and JavaScript</summary>
    <language>en-us</language>
    <projectUrl>https://getbootstrap.com/</projectUrl>
-    <iconUrl>https://getbootstrap.com/docs/4.1/assets/img/favicons/apple-touch-icon.png</iconUrl>
-    <licenseUrl>https://github.com/twbs/bootstrap/blob/master/LICENSE</licenseUrl>
+    <iconUrl>https://getbootstrap.com/docs/4.2/assets/img/favicons/apple-touch-icon.png</iconUrl>
+    <license type="file">LICENSE.txt</license>
    <copyright>Copyright 2017-2018</copyright>
    <requireLicenseAcceptance>false</requireLicenseAcceptance>
    <dependencies>
@ -22,6 +22,8 @@
    <tags>css sass mobile-first responsive front-end framework web</tags>
  </metadata>
  <files>
+    <file src="LICENSE.txt" target="" />
+
    <file src="scss\**\*.scss" target="content\Content\bootstrap" />
    <file src="dist\js\bootstrap*.js" target="content\Scripts" />
    <file src="dist\js\bootstrap*.js.map" target="content\Scripts" />
--- a/package-lock.json
+++ b/package-lock.json
@ -1,13 +1,13 @@
 {
  "name": "bootstrap",
-  "version": "4.1.3",
+  "version": "4.2.1",
  "lockfileVersion": 1,
  "requires": true,
  "dependencies": {
    "@babel/cli": {
-      "version": "7.1.5",
-      "resolved": "https://registry.npmjs.org/@babel/cli/-/cli-7.1.5.tgz",
-      "integrity": "sha512-zbO/DtTnaDappBflIU3zYEgATLToRDmW5uN/EGH1GXaes7ydfjqmAoK++xmJIA+8HfDw7UyPZNdM8fhGhfmMhw==",
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/@babel/cli/-/cli-7.2.0.tgz",
+      "integrity": "sha512-FLteTkEoony0DX8NbnT51CmwmLBzINdlXmiJCSqCLmqWCDA/xk8EITPWqwDnVLbuK0bsZONt/grqHnQzQ15j0Q==",
      "dev": true,
      "requires": {
        "chokidar": "^2.0.3",
@ -32,18 +32,18 @@
      }
    },
    "@babel/core": {
-      "version": "7.1.6",
-      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.1.6.tgz",
-      "integrity": "sha512-Hz6PJT6e44iUNpAn8AoyAs6B3bl60g7MJQaI0rZEar6ECzh6+srYO1xlIdssio34mPaUtAb1y+XlkkSJzok3yw==",
+      "version": "7.2.2",
+      "resolved": "https://registry.npmjs.org/@babel/core/-/core-7.2.2.tgz",
+      "integrity": "sha512-59vB0RWt09cAct5EIe58+NzGP4TFSD3Bz//2/ELy3ZeTeKF6VTD1AXlH8BGGbCX0PuobZBsIzO7IAI9PH67eKw==",
      "dev": true,
      "requires": {
        "@babel/code-frame": "^7.0.0",
-        "@babel/generator": "^7.1.6",
-        "@babel/helpers": "^7.1.5",
-        "@babel/parser": "^7.1.6",
-        "@babel/template": "^7.1.2",
-        "@babel/traverse": "^7.1.6",
-        "@babel/types": "^7.1.6",
+        "@babel/generator": "^7.2.2",
+        "@babel/helpers": "^7.2.0",
+        "@babel/parser": "^7.2.2",
+        "@babel/template": "^7.2.2",
+        "@babel/traverse": "^7.2.2",
+        "@babel/types": "^7.2.2",
        "convert-source-map": "^1.1.0",
        "debug": "^4.1.0",
        "json5": "^2.1.0",
@ -71,12 +71,12 @@
      }
    },
    "@babel/generator": {
-      "version": "7.1.6",
-      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.1.6.tgz",
-      "integrity": "sha512-brwPBtVvdYdGxtenbQgfCdDPmtkmUBZPjUoK5SXJEBuHaA5BCubh9ly65fzXz7R6o5rA76Rs22ES8Z+HCc0YIQ==",
+      "version": "7.2.2",
+      "resolved": "https://registry.npmjs.org/@babel/generator/-/generator-7.2.2.tgz",
+      "integrity": "sha512-I4o675J/iS8k+P38dvJ3IBGqObLXyQLTxtrR4u9cSUJOURvafeEWb/pFMOTwtNrmq73mJzyF6ueTbO1BtN0Zeg==",
      "dev": true,
      "requires": {
-        "@babel/types": "^7.1.6",
+        "@babel/types": "^7.2.2",
        "jsesc": "^2.5.1",
        "lodash": "^4.17.10",
        "source-map": "^0.5.0",
@ -182,16 +182,16 @@
      }
    },
    "@babel/helper-module-transforms": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.1.0.tgz",
-      "integrity": "sha512-0JZRd2yhawo79Rcm4w0LwSMILFmFXjugG3yqf+P/UsKsRS1mJCmMwwlHDlMg7Avr9LrvSpp4ZSULO9r8jpCzcw==",
+      "version": "7.2.2",
+      "resolved": "https://registry.npmjs.org/@babel/helper-module-transforms/-/helper-module-transforms-7.2.2.tgz",
+      "integrity": "sha512-YRD7I6Wsv+IHuTPkAmAS4HhY0dkPobgLftHp0cRGZSdrRvmZY8rFvae/GVu3bD00qscuvK3WPHB3YdNpBXUqrA==",
      "dev": true,
      "requires": {
        "@babel/helper-module-imports": "^7.0.0",
        "@babel/helper-simple-access": "^7.1.0",
        "@babel/helper-split-export-declaration": "^7.0.0",
-        "@babel/template": "^7.1.0",
-        "@babel/types": "^7.0.0",
+        "@babel/template": "^7.2.2",
+        "@babel/types": "^7.2.2",
        "lodash": "^4.17.10"
      }
    },
@ -264,26 +264,26 @@
      }
    },
    "@babel/helper-wrap-function": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/@babel/helper-wrap-function/-/helper-wrap-function-7.1.0.tgz",
-      "integrity": "sha512-R6HU3dete+rwsdAfrOzTlE9Mcpk4RjU3aX3gi9grtmugQY0u79X7eogUvfXA5sI81Mfq1cn6AgxihfN33STjJA==",
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/@babel/helper-wrap-function/-/helper-wrap-function-7.2.0.tgz",
+      "integrity": "sha512-o9fP1BZLLSrYlxYEYyl2aS+Flun5gtjTIG8iln+XuEzQTs0PLagAGSXUcqruJwD5fM48jzIEggCKpIfWTcR7pQ==",
      "dev": true,
      "requires": {
        "@babel/helper-function-name": "^7.1.0",
        "@babel/template": "^7.1.0",
        "@babel/traverse": "^7.1.0",
-        "@babel/types": "^7.0.0"
+        "@babel/types": "^7.2.0"
      }
    },
    "@babel/helpers": {
-      "version": "7.1.5",
-      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.1.5.tgz",
-      "integrity": "sha512-2jkcdL02ywNBry1YNFAH/fViq4fXG0vdckHqeJk+75fpQ2OH+Az6076tX/M0835zA45E0Cqa6pV5Kiv9YOqjEg==",
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/@babel/helpers/-/helpers-7.2.0.tgz",
+      "integrity": "sha512-Fr07N+ea0dMcMN8nFpuK6dUIT7/ivt9yKQdEEnjVS83tG2pHwPi03gYmk/tyuwONnZ+sY+GFFPlWGgCtW1hF9A==",
      "dev": true,
      "requires": {
        "@babel/template": "^7.1.2",
        "@babel/traverse": "^7.1.5",
-        "@babel/types": "^7.1.5"
+        "@babel/types": "^7.2.0"
      }
    },
    "@babel/highlight": {
@ -298,56 +298,56 @@
      }
    },
    "@babel/parser": {
-      "version": "7.1.6",
-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.1.6.tgz",
-      "integrity": "sha512-dWP6LJm9nKT6ALaa+bnL247GHHMWir3vSlZ2+IHgHgktZQx0L3Uvq2uAWcuzIe+fujRsYWBW2q622C5UvGK9iQ==",
+      "version": "7.2.2",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.2.2.tgz",
+      "integrity": "sha512-UNTmQ5cSLDeBGBl+s7JeowkqIHgmFAGBnLDdIzFmUNSuS5JF0XBcN59jsh/vJO/YjfsBqMxhMjoFGmNExmf0FA==",
      "dev": true
    },
    "@babel/plugin-proposal-async-generator-functions": {
-      "version": "7.1.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-async-generator-functions/-/plugin-proposal-async-generator-functions-7.1.0.tgz",
-      "integrity": "sha512-Fq803F3Jcxo20MXUSDdmZZXrPe6BWyGcWBPPNB/M7WaUYESKDeKMOGIxEzQOjGSmW/NWb6UaPZrtTB2ekhB/ew==",
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-async-generator-functions/-/plugin-proposal-async-generator-functions-7.2.0.tgz",
+      "integrity": "sha512-+Dfo/SCQqrwx48ptLVGLdE39YtWRuKc/Y9I5Fy0P1DDBB9lsAHpjcEJQt+4IifuSOSTLBKJObJqMvaO1pIE8LQ==",
      "dev": true,
      "requires": {
        "@babel/helper-plugin-utils": "^7.0.0",
        "@babel/helper-remap-async-to-generator": "^7.1.0",
-        "@babel/plugin-syntax-async-generators": "^7.0.0"
+        "@babel/plugin-syntax-async-generators": "^7.2.0"
      }
    },
    "@babel/plugin-proposal-json-strings": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-json-strings/-/plugin-proposal-json-strings-7.0.0.tgz",
-      "integrity": "sha512-kfVdUkIAGJIVmHmtS/40i/fg/AGnw/rsZBCaapY5yjeO5RA9m165Xbw9KMOu2nqXP5dTFjEjHdfNdoVcHv133Q==",
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-json-strings/-/plugin-proposal-json-strings-7.2.0.tgz",
+      "integrity": "sha512-MAFV1CA/YVmYwZG0fBQyXhmj0BHCB5egZHCKWIFVv/XCxAeVGIHfos3SwDck4LvCllENIAg7xMKOG5kH0dzyUg==",
      "dev": true,
      "requires": {
        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-json-strings": "^7.0.0"
+        "@babel/plugin-syntax-json-strings": "^7.2.0"
      }
    },
    "@babel/plugin-proposal-object-rest-spread": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-object-rest-spread/-/plugin-proposal-object-rest-spread-7.0.0.tgz",
-      "integrity": "sha512-14fhfoPcNu7itSen7Py1iGN0gEm87hX/B+8nZPqkdmANyyYWYMY2pjA3r8WXbWVKMzfnSNS0xY8GVS0IjXi/iw==",
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-object-rest-spread/-/plugin-proposal-object-rest-spread-7.2.0.tgz",
+      "integrity": "sha512-1L5mWLSvR76XYUQJXkd/EEQgjq8HHRP6lQuZTTg0VA4tTGPpGemmCdAfQIz1rzEuWAm+ecP8PyyEm30jC1eQCg==",
      "dev": true,
      "requires": {
        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-object-rest-spread": "^7.0.0"
+        "@babel/plugin-syntax-object-rest-spread": "^7.2.0"
      }
    },
    "@babel/plugin-proposal-optional-catch-binding": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-optional-catch-binding/-/plugin-proposal-optional-catch-binding-7.0.0.tgz",
-      "integrity": "sha512-JPqAvLG1s13B/AuoBjdBYvn38RqW6n1TzrQO839/sIpqLpbnXKacsAgpZHzLD83Sm8SDXMkkrAvEnJ25+0yIpw==",
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-optional-catch-binding/-/plugin-proposal-optional-catch-binding-7.2.0.tgz",
+      "integrity": "sha512-mgYj3jCcxug6KUcX4OBoOJz3CMrwRfQELPQ5560F70YQUBZB7uac9fqaWamKR1iWUzGiK2t0ygzjTScZnVz75g==",
      "dev": true,
      "requires": {
        "@babel/helper-plugin-utils": "^7.0.0",
-        "@babel/plugin-syntax-optional-catch-binding": "^7.0.0"
+        "@babel/plugin-syntax-optional-catch-binding": "^7.2.0"
      }
    },
    "@babel/plugin-proposal-unicode-property-regex": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-unicode-property-regex/-/plugin-proposal-unicode-property-regex-7.0.0.tgz",
-      "integrity": "sha512-tM3icA6GhC3ch2SkmSxv7J/hCWKISzwycub6eGsDrFDgukD4dZ/I+x81XgW0YslS6mzNuQ1Cbzh5osjIMgepPQ==",
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-proposal-unicode-property-regex/-/plugin-proposal-unicode-property-regex-7.2.0.tgz",
+      "integrity": "sha512-LvRVYb7kikuOtIoUeWTkOxQEV1kYvL5B6U3iWEGCzPNRus1MzJweFqORTj+0jkxozkTSYNJozPOddxmqdqsRpw==",
      "dev": true,
      "requires": {
        "@babel/helper-plugin-utils": "^7.0.0",
@ -356,54 +356,54 @@
      }
    },
    "@babel/plugin-syntax-async-generators": {
-      "version": "7.0.0",
-      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-async-generators/-/plugin-syntax-async-generators-7.0.0.tgz",
-      "integrity": "sha512-im7ged00ddGKAjcZgewXmp1vxSZQQywuQXe2B1A7kajjZmDeY/ekMPmWr9zJgveSaQH0k7BcGrojQhcK06l0zA==",
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/@babel/plugin-syntax-async-generators/-/plugin-syntax-async-generators-7.2.0.tgz",
+      "integrity": "sha512-1ZrIRBv2t0GSlcwVoQ6VgSLpLgiN/FVQUzt9znxo7v2Ov4jJrs8RY8tv0wvDmFN3qIdMKWrmMMW6yZ0G19MfGg==",
      "dev": true,
      "requires": {
        "@babel/helper-plugin-utils": "^7.0.0"
      }
    },
    "@babel/plugin-syntax-json-strings": {
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    "table": {
-      "version": "5.1.0",
-      "resolved": "https://registry.npmjs.org/table/-/table-5.1.0.tgz",
-      "integrity": "sha512-e542in22ZLhD/fOIuXs/8yDZ9W61ltF8daM88rkRNtgTIct+vI2fTnAyu/Db2TCfEcI8i7mjZz6meLq0nW7TYg==",
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/table/-/table-5.1.1.tgz",
+      "integrity": "sha512-NUjapYb/qd4PeFW03HnAuOJ7OMcBkJlqeClWxeNlQ0lXGSb52oZXGzkO0/I0ARegQ2eUT1g2VDJH0eUxDRcHmw==",
      "dev": true,
      "requires": {
-        "ajv": "^6.5.3",
-        "lodash": "^4.17.10",
-        "slice-ansi": "1.0.0",
+        "ajv": "^6.6.1",
+        "lodash": "^4.17.11",
+        "slice-ansi": "2.0.0",
        "string-width": "^2.1.1"
      }
    },
@ -9995,13 +10053,13 @@
      }
    },
    "tough-cookie": {
-      "version": "2.4.3",
-      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.4.3.tgz",
-      "integrity": "sha512-Q5srk/4vDM54WJsJio3XNn6K2sCG+CQ8G5Wz6bZhRZoAe/+TxjWB/GlFAnYEbkYVlON9FMk/fE3h2RLpPXo4lQ==",
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.5.0.tgz",
+      "integrity": "sha512-nlLsUzgm1kfLXSXfRZMc1KLAugd4hqJHDTvc2hDIwS3mZAfMEuMbc03SujMF+GEcpaX/qboeycw6iO8JwVv2+g==",
      "dev": true,
      "requires": {
-        "psl": "^1.1.24",
-        "punycode": "^1.4.1"
+        "psl": "^1.1.28",
+        "punycode": "^2.1.1"
      }
    },
    "traverse": {
@ -10374,9 +10432,9 @@
      "dev": true
    },
    "unzipper": {
-      "version": "0.9.4",
-      "resolved": "https://registry.npmjs.org/unzipper/-/unzipper-0.9.4.tgz",
-      "integrity": "sha512-kGrkTaphmXE+0/A5Q7rwcm/xHlDkXDOGEh6wuiN3SUQsyVWd7V51rwqttlNTT91JrLkfn34MoBNf38unF0vhRw==",
+      "version": "0.9.6",
+      "resolved": "https://registry.npmjs.org/unzipper/-/unzipper-0.9.6.tgz",
+      "integrity": "sha512-rPPc3LqR3aoJE1M1H3gZTOYNOcvf5ekvg8XlXGBGMNdkukCjRc7VMBybpxq3bkFOCrRhs468+UzFwTHgT6HlkA==",
      "dev": true,
      "requires": {
        "big-integer": "^1.6.17",
@ -10429,14 +10487,6 @@
      "dev": true,
      "requires": {
        "punycode": "^2.1.0"
-      },
-      "dependencies": {
-        "punycode": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
-          "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==",
-          "dev": true
-        }
      }
    },
    "urix": {
@ -10562,11 +10612,12 @@
      "dev": true
    },
    "vfile-message": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/vfile-message/-/vfile-message-1.0.2.tgz",
-      "integrity": "sha512-dNdEXHfPCvzyOlEaaQ+DcXpcxEz+pFvdrebKLiAMjobjaBC2bMeWoHOKPwJ+I8A4jQOEUDH7uoVcLWDLF1qhVQ==",
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/vfile-message/-/vfile-message-1.1.0.tgz",
+      "integrity": "sha512-D9E9mTcn6b2uWxUgNSBQPWFywPxP87dZCkemuh01vNb7zntXgHtsrTorZdURrKSpFM0O1IlQVpfdmHuJuy6EGw==",
      "dev": true,
      "requires": {
+        "@types/unist": "^2.0.2",
        "unist-util-stringify-position": "^1.1.1"
      }
    },
@ -10785,9 +10836,9 @@
      "dev": true
    },
    "yallist": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
-      "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A==",
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
+      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
      "dev": true
    },
    "yargs": {
--- a/package.js
+++ b/package.js
@ -5,7 +5,7 @@
 Package.describe({
  name: 'twbs:bootstrap',  // https://atmospherejs.com/twbs/bootstrap
  summary: 'The most popular front-end framework for developing responsive, mobile first projects on the web.',
-  version: '4.1.3',
+  version: '4.2.1',
  git: 'https://github.com/twbs/bootstrap.git'
 });

--- a/package.json
+++ b/package.json
@ -1,8 +1,8 @@
 {
  "name": "bootstrap",
  "description": "The most popular front-end framework for developing responsive, mobile first projects on the web.",
-  "version": "4.1.3",
-  "version_short": "4.1",
+  "version": "4.2.1",
+  "version_short": "4.2",
  "keywords": [
    "css",
    "sass",
@ -57,11 +57,12 @@
    "js-minify-standalone": "uglifyjs --compress typeofs=false --mangle --comments \"/^!/\" --source-map \"content=dist/js/bootstrap.js.map,includeSources,url=bootstrap.min.js.map\" --output dist/js/bootstrap.min.js dist/js/bootstrap.js",
    "js-minify-bundle": "uglifyjs --compress typeofs=false --mangle --comments \"/^!/\" --source-map \"content=dist/js/bootstrap.bundle.js.map,includeSources,url=bootstrap.bundle.min.js.map\" --output dist/js/bootstrap.bundle.min.js dist/js/bootstrap.bundle.js",
    "js-minify-docs": "cross-env-shell uglifyjs --mangle --comments \\\"/^!/\\\" --output site/docs/$npm_package_version_short/assets/js/docs.min.js site/docs/$npm_package_version_short/assets/js/vendor/anchor.min.js site/docs/$npm_package_version_short/assets/js/vendor/clipboard.min.js site/docs/$npm_package_version_short/assets/js/vendor/bs-custom-file-input.min.js \"site/docs/$npm_package_version_short/assets/js/src/*.js\"",
-    "js-test": "npm-run-all js-test-karma*",
+    "js-test": "npm-run-all js-test-karma* js-test-integration",
    "js-test-karma": "karma start js/tests/karma.conf.js",
    "js-test-karma-old": "cross-env USE_OLD_JQUERY=true npm run js-test-karma",
    "js-test-karma-bundle": "cross-env BUNDLE=true npm run js-test-karma",
    "js-test-karma-bundle-old": "cross-env BUNDLE=true USE_OLD_JQUERY=true npm run js-test-karma",
+    "js-test-integration": "rollup --config js/tests/integration/rollup.bundle.js",
    "js-test-cloud": "cross-env BROWSER=true npm run js-test-karma",
    "lint": "npm-run-all js-lint css-lint",
    "coveralls": "shx cat js/coverage/lcov.info | coveralls",
@ -98,14 +99,14 @@
  "dependencies": {},
  "peerDependencies": {
    "jquery": "1.9.1 - 3",
-    "popper.js": "^1.14.5"
+    "popper.js": "^1.14.6"
  },
  "devDependencies": {
-    "@babel/cli": "^7.1.5",
-    "@babel/core": "^7.1.6",
-    "@babel/plugin-proposal-object-rest-spread": "^7.0.0",
-    "@babel/preset-env": "^7.1.6",
-    "autoprefixer": "^9.3.1",
+    "@babel/cli": "^7.2.0",
+    "@babel/core": "^7.2.2",
+    "@babel/plugin-proposal-object-rest-spread": "^7.2.0",
+    "@babel/preset-env": "^7.2.0",
+    "autoprefixer": "^9.4.3",
    "babel-eslint": "^10.0.1",
    "babel-plugin-istanbul": "^5.1.0",
    "broken-link-checker": "^0.7.8",
@ -113,13 +114,14 @@
    "clean-css-cli": "^4.2.1",
    "coveralls": "^3.0.2",
    "cross-env": "^5.2.0",
-    "eslint": "^5.9.0",
+    "eslint": "^5.10.0",
    "find-unused-sass-variables": "^0.3.1",
    "glob": "^7.1.3",
    "hammer-simulator": "0.0.1",
    "http-server": "^0.11.1",
    "ip": "^1.1.5",
-    "karma": "^3.1.1",
+    "jquery": "^3.3.1",
+    "karma": "^3.1.4",
    "karma-browserstack-launcher": "^1.3.0",
    "karma-chrome-launcher": "^2.2.0",
    "karma-coverage-istanbul-reporter": "^2.0.4",
@ -127,23 +129,24 @@
    "karma-firefox-launcher": "^1.1.0",
    "karma-qunit": "^2.1.0",
    "karma-sinon": "^1.0.5",
-    "node-sass": "^4.10.0",
-    "nodemon": "^1.18.6",
+    "node-sass": "^4.11.0",
+    "nodemon": "^1.18.9",
    "npm-run-all": "^4.1.5",
-    "popper.js": "^1.14.5",
+    "popper.js": "^1.14.6",
    "postcss-cli": "^6.0.1",
    "qunit": "^2.8.0",
-    "rollup": "^0.67.3",
-    "rollup-plugin-babel": "^4.0.3",
-    "rollup-plugin-node-resolve": "^3.4.0",
+    "rollup": "^0.68.0",
+    "rollup-plugin-babel": "^4.1.0",
+    "rollup-plugin-commonjs": "^9.2.0",
+    "rollup-plugin-node-resolve": "^4.0.0",
    "shelljs": "^0.8.3",
    "shx": "^0.3.2",
-    "sinon": "^7.1.1",
-    "stylelint": "^9.8.0",
+    "sinon": "^7.2.2",
+    "stylelint": "^9.9.0",
    "stylelint-config-recommended-scss": "^3.2.0",
    "stylelint-config-standard": "^18.2.0",
    "stylelint-order": "^2.0.0",
-    "stylelint-scss": "^3.4.0",
+    "stylelint-scss": "^3.4.1",
    "uglify-js": "^3.4.9",
    "vnu-jar": "18.11.5"
  },
@ -178,7 +181,7 @@
    },
    {
      "path": "./dist/css/bootstrap.min.css",
-      "maxSize": "22.5 kB"
+      "maxSize": "22.7 kB"
    },
    {
      "path": "./dist/js/bootstrap.bundle.js",
@ -215,7 +218,7 @@
    "dependencies": {},
    "peerDependencies": {
      "jquery": "1.9.1 - 3",
-      "popper.js": "^1.14.5"
+      "popper.js": "^1.14.6"
    }
  }
 }
--- a/scss/_alert.scss
+++ b/scss/_alert.scss
@ -27,7 +27,7 @@
 // Expand the right padding and account for the close button's positioning.

 .alert-dismissible {
-  padding-right: ($close-font-size + $alert-padding-x * 2);
+  padding-right: $close-font-size + $alert-padding-x * 2;

  // Adjust close link position
  .close {
--- a/scss/_badge.scss
+++ b/scss/_badge.scss
@ -13,6 +13,7 @@
  white-space: nowrap;
  vertical-align: baseline;
  @include border-radius($badge-border-radius);
+  @include transition($badge-transition);

  @at-root a#{&} {
    @include hover-focus {
--- a/scss/_card.scss
+++ b/scss/_card.scss
@ -43,7 +43,7 @@
 }

 .card-subtitle {
-  margin-top: -($card-spacer-y / 2);
+  margin-top: -$card-spacer-y / 2;
  margin-bottom: 0;
 }

@ -99,15 +99,15 @@
 //

 .card-header-tabs {
-  margin-right: -($card-spacer-x / 2);
+  margin-right: -$card-spacer-x / 2;
  margin-bottom: -$card-spacer-y;
-  margin-left: -($card-spacer-x / 2);
+  margin-left: -$card-spacer-x / 2;
  border-bottom: 0;
 }

 .card-header-pills {
-  margin-right: -($card-spacer-x / 2);
-  margin-left: -($card-spacer-x / 2);
+  margin-right: -$card-spacer-x / 2;
+  margin-left: -$card-spacer-x / 2;
 }

 // Card image
--- a/scss/_carousel.scss
+++ b/scss/_carousel.scss
@ -187,9 +187,9 @@

 .carousel-caption {
  position: absolute;
-  right: ((100% - $carousel-caption-width) / 2);
+  right: (100% - $carousel-caption-width) / 2;
  bottom: 20px;
-  left: ((100% - $carousel-caption-width) / 2);
+  left: (100% - $carousel-caption-width) / 2;
  z-index: 10;
  padding-top: 20px;
  padding-bottom: 20px;
--- a/scss/_custom-forms.scss
+++ b/scss/_custom-forms.scss
@ -10,8 +10,8 @@
 .custom-control {
  position: relative;
  display: block;
-  min-height: ($font-size-base * $line-height-base);
-  padding-left: $custom-control-gutter;
+  min-height: $font-size-base * $line-height-base;
+  padding-left: $custom-control-gutter + $custom-control-indicator-size;
 }

 .custom-control-inline {
@ -74,8 +74,8 @@
  // Background-color and (when enabled) gradient
  &::before {
    position: absolute;
-    top: (($font-size-base * $line-height-base - $custom-control-indicator-size) / 2);
-    left: -$custom-control-gutter;
+    top: ($font-size-base * $line-height-base - $custom-control-indicator-size) / 2;
+    left: -($custom-control-gutter + $custom-control-indicator-size);
    display: block;
    width: $custom-control-indicator-size;
    height: $custom-control-indicator-size;
@ -89,8 +89,8 @@
  // Foreground (icon)
  &::after {
    position: absolute;
-    top: (($font-size-base * $line-height-base - $custom-control-indicator-size) / 2);
-    left: -$custom-control-gutter;
+    top: ($font-size-base * $line-height-base - $custom-control-indicator-size) / 2;
+    left: -($custom-control-gutter + $custom-control-indicator-size);
    display: block;
    width: $custom-control-indicator-size;
    height: $custom-control-indicator-size;
@ -161,6 +161,47 @@
 }


+// switches
+//
+// Tweak a few things for switches
+
+.custom-switch {
+  padding-left: $custom-switch-width + $custom-control-gutter;
+
+  .custom-control-label {
+    &::before {
+      left: -($custom-switch-width + $custom-control-gutter);
+      width: $custom-switch-width;
+      pointer-events: all;
+      border-radius: $custom-switch-indicator-border-radius;
+    }
+
+    &::after {
+      top: calc(#{(($font-size-base * $line-height-base - $custom-control-indicator-size) / 2)} + #{$custom-control-indicator-border-width * 2});
+      left: calc(#{-($custom-switch-width + $custom-control-gutter)} + #{$custom-control-indicator-border-width * 2});
+      width: $custom-switch-indicator-size;
+      height: $custom-switch-indicator-size;
+      background-color: $custom-control-indicator-border-color;
+      border-radius: $custom-switch-indicator-border-radius;
+      @include transition(transform .15s ease-in-out, $custom-forms-transition);
+    }
+  }
+
+  .custom-control-input:checked ~ .custom-control-label {
+    &::after {
+      background-color: $custom-control-indicator-bg;
+      transform: translateX($custom-switch-width - $custom-control-indicator-size);
+    }
+  }
+
+  .custom-control-input:disabled {
+    &:checked ~ .custom-control-label::before {
+      background-color: $custom-control-indicator-checked-disabled-bg;
+    }
+  }
+}
+
+
 // Select
 //
 // Replaces the browser default select with a custom one, mostly pulled from
@ -346,7 +387,7 @@
  &::-webkit-slider-thumb {
    width: $custom-range-thumb-width;
    height: $custom-range-thumb-height;
-    margin-top: (($custom-range-track-height - $custom-range-thumb-height) / 2); // Webkit specific
+    margin-top: ($custom-range-track-height - $custom-range-thumb-height) / 2; // Webkit specific
    @include gradient-bg($custom-range-thumb-bg);
    border: $custom-range-thumb-border;
    @include border-radius($custom-range-thumb-border-radius);
@ -421,7 +462,7 @@
    cursor: $custom-range-track-cursor;
    background-color: transparent;
    border-color: transparent;
-    border-width: ($custom-range-thumb-height * .5);
+    border-width: $custom-range-thumb-height / 2;
    @include box-shadow($custom-range-track-box-shadow);
  }

--- a/scss/_dropdown.scss
+++ b/scss/_dropdown.scss
@ -118,7 +118,7 @@

 // Dividers (basically an `<hr>`) within the dropdown
 .dropdown-divider {
-  @include nav-divider($dropdown-divider-bg);
+  @include nav-divider($dropdown-divider-bg, $dropdown-divider-margin-y);
 }

 // Links, buttons, and more within the dropdown menu
--- a/scss/_forms.scss
+++ b/scss/_forms.scss
@ -190,13 +190,13 @@ textarea.form-control {
 .form-row {
  display: flex;
  flex-wrap: wrap;
-  margin-right: -5px;
-  margin-left: -5px;
+  margin-right: -$form-grid-gutter-width / 2;
+  margin-left: -$form-grid-gutter-width / 2;

  > .col,
  > [class*="col-"] {
-    padding-right: 5px;
-    padding-left: 5px;
+    padding-right: $form-grid-gutter-width / 2;
+    padding-left: $form-grid-gutter-width / 2;
  }
 }

@ -318,6 +318,7 @@ textarea.form-control {
    }
    .form-check-input {
      position: relative;
+      flex-shrink: 0;
      margin-top: 0;
      margin-right: $form-check-input-margin-x;
      margin-left: 0;
--- a/Show More
+++ b/Show More