github/Rebel — pull request #78 by alanjrogers (2013-04-16 02:11:03+00:00)
Title: Fix flippedness bug drawing vertical 3 part images.

Fixes #77

See [NSDrawThreePartImage] (https://developer.apple.com/library/mac/documentation/Cocoa/Reference/ApplicationKit/Miscellaneous/AppKit_Functions/Reference/reference.html#//apple_ref/doc/uid/20000695-SW62).