Deprecate RACSequence, rename collection categories
Deprecate -rac_sequence extensions
Add -rac_signal extensions to collections
Omit deprecations from ReactiveCocoa.h (when enabled)
Rename -toArray to -array

Resolves #913.
Copy some Framework Overview text into RACSignal.h
Deprecate RACStream, copy declarations to RACSignal
Rewrite RACStream operator docs to focus on signals
:fire: standalone documentation :fire:
Merge branch 'replace-commands-with-actions' into deprecate-sequences

Conflicts:
	ReactiveCocoaFramework/ReactiveCocoa/RACSignal+Operations.h
	ReactiveCocoaFramework/ReactiveCocoa/RACSignal+Operations.m
Merge branch 'replace-commands-with-actions' into deprecate-sequences
Refactor rac_sequence tests to use rac_signal instead
SHANE LONG
Merge pull request #915 from ReactiveCocoa/deprecate-sequences

Deprecate RACSequence and RACStream