moment/moment — pull request #1419 by kroo (2014-01-15 02:53:06+00:00)
Title: Better timezone support for manipulating moments

This adds a second argument to setters that provides a hint to updateOffset to not change hours/minutes when crossing a tz boundary. This is frequently desirable when modifying part of an existing moment object directly.

It further passes this argument whenever adding / subtracting days or months, fixing an issue with moment-timezone (moment/moment-timezone#28). See the corresponding PR for moment-timezone here: moment/moment-timezone#53.