Stuff that I contributed to Open Source in Mar '13.
I debugged an issue in django ModelChoiceField and ModelMultipleChoiceField which was causing model forms to be validated even though they weren't changed. The problem was that has_changed was comparing an object_id or list of ids with an instance or queryset.
Even though the fix was a part of another branch, the tests I had proposed were included in the commit.
This is a pet project that I started to make it easier to run individual django tests from within vim.