AFNetworking/AFNetworking — pull request #283 by steipete (2012-04-06 08:47:27+00:00)
Title: remote obsolete KVO change calls.

See http://petersteinberger.com/blog/2012/dont-call-willchangevalueforkey/.

I didn't remove the call in the AFNetworkActivityIndicatorManager, since I already removed this in my other pull request.