Removes Ruby 1.8.7 monkeypatch
Adds 1.8.7 deprecation notice to changelog
Adds ReadCollectionResource module

It is used by resources that are used only for
reading, not for saving or destroying.
Unifies follower and following tests
Fixes the liking

Previously the liking was a bit all over the place.
Now fetching likes will always return proxies,
liking a clip is done from a clear place (Clip)
and everything is tested.
Changes the argument order for resources

Maybe going to named arguments would make sense.
Adds more tests for Clip & FollowRelationship
Removes unnecessary limit on user clip fetching options
Adds a method for checking if user is following a list
Updates changelog