* add new primary_key field.
* Add new field, populate data, change to being pk, change name, double length of name field, and set it to unique
* change version, and add new migration
* bump down the size, 767/4 = 191
* update readme
* remove models.py comment
* Added some better content type fixes, a better save, and delete fails silently
* better unicode method
* fix comment, and extract test
* only stick to mimetype guess
* delete QS unconditionally