Version 1.3.1

Version 1.3.

Remove Django/South from packages files, and put requirements in
setup.py rather than requirements.txt.

Version 1.2.1.

Version 1.2.

Django 1.4.11 is now the minimum requirement, as that is when six.PY2
was added.

Version 1.1 release.

Version 1.0.3

Version 1.0.2

Version 1.0.1.

Fixes to setup.py, v1.0.0 to PyPI.

Read in requirements.txt in setup.py to keep them in sync.