moment/moment — pull request #1763 by icambron (2014-07-06 07:45:46+00:00)
Title: deprecate pre-2.0 add/subtract

Fix for #1729:

* DRY for add/subtract
* Deprecate old arg ordering
* Fix internal uses and test uses (except, of course, ones specifically testing add/subtract)
* Renamed tests so that "reversed" now means the opposite