RW.isMemberOf & RW.is* jsDoc fixes
RW.isWindow fix
RW.Canvas.Context
RW.Canvas.Resolution
RW.Canvas.Context: Options mixin
RW.Canvas.Context: Options mixin
RW.Canvas.Context: Options mixin
Merge remote-tracking branch 'origin/RW.Canvas' into RW.Canvas

Conflicts:
	source/Core/Canvas/Context.js