Django 1.7 still suffers from a range of migration problems. This one
caused migrations to be created infinitely:
https://code.djangoproject.com/ticket/23014

A commit prior to that change, but containing the fix for #23041, fixes
the issue for now.

This crude and destructive script helps create migrations for both South
and Django's native migrations framework. I'm happy to leave plenty of
room for improvement so that the King of Bash (aka @codeinthehole) can
do his thing.

This commit also enforces South 1.0. It's a backwards compatible release
which explicitly is meant to help the migration; it makes both our and
our users life's easier. Notably, it first looks for a south_migrations
directory before falling back to the migrations directory in an app.
That nicely avoids any conflicts between migration files between the two
migration frameworks.