Added StackTracer, a quick and dirty tool that will log relevant stack frames to show you how something got called.
Added inline functions for testing for retina and device idiom.
Added convenience method for snapping UIView frames to the pixel grid.
Separated the stack frame from the comments for the purposes of equality.  This fixes a bug where a stack frame is not equal to itself because it was logged with a comment.
Added LocalizedPrice category for SKProduct.
Added a little bit to the readme.  StackTracer now has an option for logging all frames rather than just frames from the current project.
Dropped in a commented out regex for chopping off the NSLog prefix with a BBEdit find/change.