Cleared up the Django 1.8 Warning messages.
Upgraded script to be Django 1.7 friendly
Django 1.7 upgrades
Updated the docs to be Django 1.7 friendly
Test Django 1.7!
Okay. Now I think Travis will run D1.7 tests!
Django 1.7 no run on Python 2.6. Exclude tests.
Missing return.
Remove exception.
Replace get_query_set with assignment.

Avoid calling the super class by accident, potentially causing loops.
Follow the django-mptt approach here.
docs: use new get_queryset() notation too
Travis and tox: add Django 1.7
admin: split get_queryset() / queryset() methods.

avoid calling loops due to some inherited classes
modernize runtests to fix app loading
Merge branch 'django_1.7_support' of https://github.com/g3rd/django_polymorphic

Conflicts:
	docs/managers.rst
	polymorphic/admin.py
	polymorphic/manager.py
	polymorphic/tests.py
	runtests.py