SomeModel => TrashableMixin in super() call

SomeModel => TrashableMixin in super() call
Merge pull request #1 from z4c/patch-1

SomeModel => TrashableMixin in super() call
Give Nathan Ostgard proper props for the idea
Merging cpbotha's changes into master.
Upgrading version in setup
Fixing cruft left over from merge
Updated models.py to use timezone safe datetime

Updated models.py to use timezone safe datetime in django if available, otherwise fallback to the standard datetime.
Merge pull request #3 from bitniftee/master

Updated models.py to use timezone safe datetime
Merge branch 'master' of github.com:powellc/django-undelete
Bump version and only support >=Django 1.7