Fix Django 1.6 compatibility
Fix Django 1.6 compatibility
Allow filtering over None on a nullable ForeignKey
Allow filtering over None on a nullable ForeignKey
Merge branch 'master' of https://github.com/eubrin/django-easyfilters
* Fixing tests for filtering on ForeignKey == None
* PEP9 compatibility
* Added Eugene to AUTHORS
Merge pull request #9 from eubrin/master

Added support for NULLs in ForeignKey filters.