Merge branch 'south'

* south:
  restored Python3 support
  version bump
  enabled support for default=None
  fixed tests
  updated version
  rebase
  fixed default values and added test coverage
  added default field converter
  enabled proper integer serialization.
  added serialization support
  Added enum param could be string (to support south)
  added South migration support
Bump to 0.2.0
- Remove Labels from attrs before initializing
- Add test to verify Labels is not in Choices
Fixed spelling errors
Merge pull request #7 from berendiwema/patch-2

Fixed spelling errors
Merge pull request #6 from berendiwema/patch-1

Do not include the 'Labels' object in the choices list
Bump to 0.2.1
Merge remote-tracking branch 'supermaster/master'

Conflicts:
	tests/test_enums.py