Merge pull request #1026 from ReactiveCocoa/kvo-dealloc-race

Attempt to fix resurrection of dead objects in KVO signals
Merge branch 'kvo-dealloc-race' into fix-kvo-capturing-self

Conflicts:
	ReactiveCocoaFramework/ReactiveCocoa/NSObject+RACPropertySubscribing.m
	ReactiveCocoaFramework/ReactiveCocoa/RACSignal+Operations.m
Merge branch 'master' into 3.0-development

Conflicts:
	ReactiveCocoaFramework/ReactiveCocoa/NSObject+RACDeallocating.m
	ReactiveCocoaFramework/ReactiveCocoa/NSObject+RACPropertySubscribing.m
	ReactiveCocoaFramework/ReactiveCocoa/RACSignal+Operations.m
Merge branch '3.0-development' into fix-kvo-capturing-self

Conflicts:
	ReactiveCocoaFramework/ReactiveCocoa/NSObject+RACPropertySubscribing.m