Bump version to 0.4.3

Rebase on master

Merge pull request sunscrapers#123 from sunscrapers/django-19-compati…

…bility

Django 1.9 compatibility

Release version 0.4.0

Release version 0.3.2

Release version 0.3.1

Release 0.3.0 version

Bump version to 0.2.1