[TIMOB-1555] IOS: Refactor of sublayers in preparation for shadow support
[TIMOB-1555][TIMOB-13294] Expose clipMode to control clipping. Set up explicit rules for clipping behavior when clipMode undefined or default.
[TIMOB-13294] Let shadow take precedence over border for clipping behavior
[TIMOB-1555] Animate sublayers correctly
Merge branch 'master' of git://github.com/appcelerator/titanium_mobile into timob-1555
[TIMOB-13294] Update clipping when setting borderwidth
[TIMOB-1555] Typo
[TIMOB-1555][TIMOB-13294] Doc Update
Doc Update
Merge branch 'master' of git://github.com/appcelerator/titanium_mobile into timob-1555
[TIMOB-15099] Add support to specify border width/radius as valid dimensions
Merge pull request #5367 from vishalduggal/timob-1555

[TIMOB-1555][TIMOB-13294] iOS: Shadows and clipping on Views