Variables do not exist anymore, don't specify them
Make a factory for playlists (for testing items).
Space out the Item spec, remove unnecessary require
Add playlist factory, for real.
Forgot an instance of Bra::Model::Playlist.
Sprinkle some newlines.
Fix one of the handler call checks.
Fix the other failing tests.
Fix typo in #notify_update/delete tests.
DRY up the updates channel method specs.
Create factory for a minimal model object.
Use factory for model object spec.
Add new exceptions for missing update channel.
Expect MissingUpdateChannel.  This breaks the spec.
Clean up MissingUpdateChannel a bit.
Create NoUpdateChannel.
When registering nil, use NoUpdateChannel
Use NoUpdateChannel on ModelObjects.
Forgot to call .new...
Typo in spec: model_object, not object