gistfile1.txt

If I remember well, we discussed at some point with you and charettes about
removing the string version (as opposed to callable) of RunPython, if we do it,
it may be better to do it early on in the release cycle.

For some reason MyModel.objects.create() returned an object with pk=None,
I could confirm the object was created with a call to MyModel.objects.all().
I'm not totally sure if it's a bug or a side effect of the fake ORM.

I was bitten quite badly by the fact that custom Manager and custom save()
methods aren't called, https://github.com/django/django/blob/master/docs/topics/migrations.txt#L296-L297
probably should have a `.. warning::` box.

I don't understand https://github.com/django/django/blob/master/docs/topics/migrations.txt#L301-L305,
particularly the "so if you absolutely need access to these you can opt to move
them into a superclass." part.