Rename .get_query_set() to .get_queryset()

For Django 1.8
Put in right scope for new app loading
auth.User.get_profile() no longer used
Remove known unclean dirs before recursing
Use bumpversion
Version 0.8: Prep for things to come

No deprecation warnings on Django 1.7

Side effect: Needs Django 1.6

Work started towards Py3K-support

Bonus: uses bumpversion to avoid some of the trouble from 0.7.3-0.7.4