Add message tools for direct messages
Remove duplicate 'text' field in tests for dm messagetools
Bring back tests removed when moving FakeTweet._get_user_mentions as a module-level helper
Finish incomplete test for FakeStream.accepts for multiple message types
Merge branch 'feature/issue-10-message-tools-for-direct-messages' into develop
Assert that a messages matching a different message type's predicate are rejected in FakeStream.accept's test for multiple message types
Merge branch 'feature/issue-9-add-direct-message-support-to-the-fake-twitter-api' into develop
Merge branch 'develop' into feature/issue-11-tests-for-uncovered-things-in-fake-twitter

Conflicts:
	txtwitter/tests/test_fake_twitter.py