* refs #1: Updated tox + travis.
* refs #1; Fixed path to register.
* refs #1: Updated urls.py
* refs #1: Added username field. Not really sure why it was needed, but whatever.
* Added an update note.
* refs #2: Updated travis.
* refs #2: Updated command to run tests.
* refs #2: Added a test showing permission_required is busted.
* refs #2: Custom user modal needs a default manager.
* refs #2: Updated settings.
* refs #2: Stop the exception from being raised.
* refs #2: Fixed a problem with named parameters.
Got the following error when installing django-authority:
File "/path/to/env/build/django-authority/example/users/admin.py", line 2
from example.users.User
^
SyntaxError: invalid syntax
