mutualmobile/MMDrawerController — pull request #221 by stevekohls (2014-02-20 18:09:27+00:00)
Title: Added the ability to show shadows on either drawer side independently.

I needed to show a shadow on one drawer side, but not on the other. I'm modifying the shadow rect based on a mask which indicates on which side you would like shadows. If showShadows is NO, no shadows are drawn.