Remove RACPromise
Remove RACPromise APIs, or replace with cold signals
Remove references to promises from docs/deprecations
Remove promises from the CHANGELOG
++phrasing
Merge pull request #995 from ReactiveCocoa/cant-keep-my-promises

Remove RACPromise
Merge branch '3.0-development' into bye-bye-actions

Conflicts:
	Documentation/FrameworkOverview.md
Remove CHANGELOG entry for RACAction