Remove tastypie integration; upgrade to Django 1.7
Add a Django 1.7-compatible test runner.
Rename `UserOwnedModelManager` to just `UserOwnedManager` for consistency with Django naming convention.
Replace `_for_user` methods with methods that override the base manager methods - this should help enforce a user context for models, and implement initial set of method overrides in this manner.
Add initial set of tests for owned model behaviour.
v0.1.1