oauth2client is deprecated and there seems to be no path forward for poor souls who used the contrib/django_util code from it.

So I converted django_util to support Django >=2, Python 3.6, and google-auth-oauthlib. See: googleapis/google-auth-library-python#181

AFAIK, all unit tests are passing, 100% coverage was maintained from oauth2client, and the docs are appropriately changed.

The pipenv files (Pipfile, Pipfile.lock) are in VCS for convenience; the required libs are explicitly in setup.py.

I had to make some arbitrary decisions:

• Credentials go into the CredentialsField ORM using jsonpickle.
• Rather than storing the "Flow" object into request.session, I store a "flow_settings" that can be used to construct the flow, as the Flow object isn't serializable.

I left the old oauth2client files within deprecated/, and attempted to leave the git history sensible so it's clear what files went where.

Install editable: pip install -e .[dev]

Build docs: tox -e docs

Run tests: python manage.py test

Run coverage test with tox: tox -e cover

Run flake8 with tox: tox -e flake8

I added a django "manage.py" that can be run with python manage.py runserver.