Update tox
Update travis
Fix join promotion for django 1.7
Fix unsupported lookup
Fix import change
Add MIDDLEWARES to test settings
Add testenv for python 2.7 and django 1.7
Setup Django’s 1.7 application environment
Test was failing due to table alias not being applied. In Django 1.7 we need to to call change_aliases for our SqlAggregate conditional_template
Fix Python3 api.
Update contributors list
Ignore .DS_Store
Bump version to 0.5 \o/
Fix README
Improve travis test matrix
Improve travis test matrix
Improve travis test matrix
Merge pull request #11 from henriquebastos/django-1.7

Fix for Django 1.7