Drop support for Django 1.3.
Added support for Python 3.
Added cleaned_data to MultiForm.

This should improve compatibility with things like
django.contrib.messages.views.SuccessMessageMixin.

Reviewed-By: Antoine Catton <acatton@fusionbox.com>
Added support for Django 1.6.
Merge branch 'py3'

Reviewed by: Scott Clark <sclark@fusionbox.com>
Allow, render legend attributes on fieldsets
Betterforms has no BaseForm class?
Add legend feature to documentation
Test fieldset legend rendering
Merge remote-tracking branch 'origin/fieldset-legends'

* origin/fieldset-legends:
  Test fieldset legend rendering
  Add legend feature to documentation
  Betterforms has no BaseForm class?
  Allow, render legend attributes on fieldsets
Moved all of the templates to betterforms/
Fixed list rendering in docs