github/ReactiveCocoa — pull request #35 by jspahrsummers (2012-08-21 02:53:15+00:00)
Title: Fold <RACSubscribable> into RACSubscribable

The protocol wasn't adding any value over the class – nothing conforms to it which doesn't inherit from `RACSubscribable`, and `RACSubscribable+Operations` only work on the class itself anyways.

The main motivation here was cleaning up informal protocol noise on `NSObject`.