moment/moment — pull request #2127 by Gobie (2014-12-28 14:45:58+00:00)
Title: Code cleanup and speedup

Code cleanup (after minification saved ~500 bytes)
- remove unused code
- declare references for Math functiona
- use undefined consistently, short-circuiting, existing functionality, computed values, ...
- clean structure of some conditions

Code speedup
- optimize leftZeroFill by ~20%, benchmark added
- optimize map