Add 2.8.0 changelog
Fix Tibetan language code (ti -> bo)
Fix Burmese code in comment (mm -> my)
Bump version to 2.8.0
Build 2.8.0
Fix travis npm version bug
Add failing unit tests asserting old moment().lang(str) behavior
Fix moment().lang() pre 2.8 behavior
Make jscs happy
Merge pull request #1813 from ichernev/bugfix/maintain-lang-original-behavior

Fix moment().lang([key]) backwards compatibility broken in 2.8.0.
Add 2.8.1 changelog
Bump version to 2.8.1
Build 2.8.1
Add test for moment#locale(false)
Add missing locale key to file comment.
Merge pull request #1856 from egilkh/fix-locale-file-comments

Add missing locale key to file comment.
Use only single quotes
Modified longDateFormat.LT format 'mm' to 'm'

It's little bit awkward to show 'minutes' in two digits.
So, it need to be modified to show like 2[minute], not 02[minute].
Merge pull request #1800 from kyungw00k/master

@changelog
@section lang-bugfix
@description Use 'm' instead of 'mm' in longDateFormat in korean
Spanish locale: del→de before year

The proper preposition before the year is «de». «del» is used informally for years since 2000 but is not the proper form and cannot be used for years before 2000.