Cleanup MANIFEST.in
Use a self-executing anonymous function for better encapsulation
Switch to revealing module pattern

see: http://addyosmani.com/resources/essentialjsdesignpatterns/book/#revealingmodulepatternjavascript
Initial work on python 3 support
Adapt test module names so they are picked up by the new testrunner

See: https://docs.djangoproject.com/en/dev/releases/1.6/#discovery-of-tests-in-any-test-module
Allow running tests in multiple environments via tox
Remove deprecated CropForeignKey
Use jQuery in no conflict mode
Adjust documentation
Rather test minimal required version against python 2.6
Adjust Travis CI config
Fix imports in example app
Also run tests for Django 1.6 on 2.6 and 2.7