Ember.ResourceCollection should call createWithMixins if possible. (In 0.9.8, create functions the same way, hence the _super default)
Update other top level classes (Resource and AbstractSchemaItem) to use createWithMixins if they can.
Merge pull request #57 from zendesk/chris/fix_object_create_violations

Fix Ember 1.0 object.create violations in ResourceCollection