* [#1761](https://github.com/moment/moment/issues/1761): moments created without a language are no longer following the global language, in case it changes. Only newly created moments take the global language by default. In case you're affected by this, wait, comment on [#1797](https://github.com/moment/moment/issues/1797) and wait for a proper reimplementation
* [#1642](https://github.com/moment/moment/issues/1642): 45 days is no longer "a month" according to humanize, cutoffs for month, and year have changed. Hopefully your code does not depend on a particular answer from humanize (which it shouldn't anyway)
* [#1784](https://github.com/moment/moment/issues/1784): if you use the human readable English datetime format in a weird way (like storing them in a database) that would break when the format changes you're at risk.
* deprecations (old behavior will be dropped in 3.0)
* [#1761](https://github.com/moment/moment/issues/1761) `lang` is renamed to `locale`, `langData` -> `localeData`. Also there is now `defineLocale` that should be used when creating new locales
* [#1763](https://github.com/moment/moment/issues/1763) `add(unit, value)` and `subtract(unit, value)` are now deprecated. Use `add(value, unit)` and `subtract(value, unit)` instead.
* [#1759](https://github.com/moment/moment/issues/1759) rename `duration.toIsoString` to `duration.toISOString`. The js standard library and moment's `toISOString` follow that convention.
* [#1419](https://github.com/moment/moment/issues/1419), [#1468](https://github.com/moment/moment/issues/1468), [#1467](https://github.com/moment/moment/issues/1467), [#1546](https://github.com/moment/moment/issues/1546) better handling of timezone-d moments around DST
* [#1462](https://github.com/moment/moment/issues/1462) add weeksInYear and isoWeeksInYear
* [#1475](https://github.com/moment/moment/issues/1475) support ordinal parsing
* [#1499](https://github.com/moment/moment/issues/1499) composer support
* [#1577](https://github.com/moment/moment/issues/1577), [#1604](https://github.com/moment/moment/issues/1604) put Date parsing in moment.createFromInputFallback so it can be properly deprecated and controlled in the future
* [#1545](https://github.com/moment/moment/issues/1545) extract two-digit year parsing in moment.parseTwoDigitYear, so it can be overwritten
* [#1590](https://github.com/moment/moment/issues/1590) (see [#1574](https://github.com/moment/moment/issues/1574)) set AMD global before module definition to better support non AMD module dependencies used in AMD environment
* [#1589](https://github.com/moment/moment/issues/1589) remove global in Node.JS environment (was not working before, nobody complained, was scheduled for removal anyway)
* [#1586](https://github.com/moment/moment/issues/1586) support quarter setting and parsing
* 18 bugs fixed
### 2.5.1
* languages
* [#1392](https://github.com/moment/moment/issues/1392) Armenian (hy-am)
* [#1421](https://github.com/moment/moment/issues/1421) remove html entities from Welsh
* [#1418](https://github.com/moment/moment/issues/1418) fixes [#1401](https://github.com/moment/moment/issues/1401) improved non-padded tokens in strict matching
* [#1417](https://github.com/moment/moment/issues/1417) fixes [#1404](https://github.com/moment/moment/issues/1404) handle buggy moment object created by property cloning
* [#1398](https://github.com/moment/moment/issues/1398) fixes [#1397](https://github.com/moment/moment/issues/1397) fix Arabic-like week number parsing
* [#1396](https://github.com/moment/moment/issues/1396) add leftZeroFill(4) to GGGG and gggg formats
* [#1373](https://github.com/moment/moment/issues/1373) use lowercase for months and days in Catalan
* testing
* [#1374](https://github.com/moment/moment/issues/1374) run tests on multiple browser/os combos via SauceLabs and Travis
* [1311](https://github.com/moment/moment/issues/1311) Add quarter getter and format token `Q`
* [1303](https://github.com/moment/moment/issues/1303) strict parsing now respects number of digits per token (fix [1196](https://github.com/moment/moment/issues/1196))
* 0d30bb7 add jspm support
* [1347](https://github.com/moment/moment/issues/1347) improve zone parsing
* [1362](https://github.com/moment/moment/issues/1362) support merideam parsing in Korean
* 22 bugfixes
### 2.4.0
* **Deprecate** globally exported moment, will be removed in next major
Revamped parser to support parsing non-separated strings (YYYYMMDD vs YYYY-MM-DD).
Added support for millisecond parsing and formatting tokens (S SS SSS)
Added a getter for `moment.lang()`
Various bugfixes.
There are a few things deprecated in the 1.6.0 release.
1. The format tokens `z` and `zz` (timezone abbreviations like EST CST MST etc) will no longer be supported. Due to inconsistent browser support, we are unable to consistently produce this value. See [this issue](https://github.com/timrwood/moment/issues/162) for more background.
2. The method `moment.fn.native` is deprecated in favor of `moment.fn.toDate`. There continue to be issues with Google Closure Compiler throwing errors when using `native`, even in valid instances.
3. The way to customize am/pm strings is being changed. This would only affect you if you created a custom language file. For more information, see [this issue](https://github.com/timrwood/moment/pull/222).
Added `moment.version` to get the current version.
Removed `window !== undefined` when checking if module exists to support browserify. [issue 25](https://github.com/timrwood/moment/pull/25)
### 1.0.0
Added convenience methods for getting and setting date parts.
Added better support for `moment.add()`.
Added better lang support in NodeJS.
Renamed library from underscore.date to Moment.js
### 0.6.1
Added Portuguese, Italian, and French language support
### 0.6.0
Added _date.lang() support.
Added support for passing multiple formats to try to parse a date. _date("07-10-1986", ["MM-DD-YYYY", "YYYY-MM-DD"]);
Made parse from string and single format 25% faster.
### 0.5.2
Bugfix for [issue 8](https://github.com/timrwood/underscore.date/pull/8) and [issue 9](https://github.com/timrwood/underscore.date/pull/9).
### 0.5.1
Bugfix for [issue 5](https://github.com/timrwood/underscore.date/pull/5).
### 0.5.0
Dropped the redundant `_date.date()` in favor of `_date()`.
Removed `_date.now()`, as it is a duplicate of `_date()` with no parameters.
Removed `_date.isLeapYear(yearNumber)`. Use `_date([yearNumber]).isLeapYear()` instead.
Exposed customization options through the `_date.relativeTime`, `_date.weekdays`, `_date.weekdaysShort`, `_date.months`, `_date.monthsShort`, and `_date.ordinal` variables instead of the `_date.customize()` function.
### 0.4.1
Added date input formats for input strings.
### 0.4.0
Added underscore.date to npm. Removed dependencies on underscore.
### 0.3.2
Added `'z'` and `'zz'` to `_.date().format()`. Cleaned up some redundant code to trim off some bytes.
### 0.3.1
Cleaned up the namespace. Moved all date manipulation and display functions to the _.date() object.
### 0.3.0
Switched to the Underscore methodology of not mucking with the native objects' prototypes.
Made chaining possible.
### 0.2.1
Changed date names to be a more pseudo standardized 'dddd, MMMM Do YYYY, h:mm:ss a'.
Added `Date.prototype` functions `add`, `subtract`, `isdst`, and `isleapyear`.
### 0.2.0
Changed function names to be more concise.
Changed date format from php date format to custom format.
