Adding smoke test for #29, running migrations always fails if there is a SortedM2M in use. Even if it's not part of the migration.
Adding smoke test for #29, running migrations always fails if there is a SortedM2M in use. Even if it's not part of the migration.

fabrique/django-sortedm2m,gradel/django-sortedm2m,gregmuellegger/django-sortedm2m,fabrique/django-sortedm2m,gregmuellegger/django-sortedm2m,gradel/django-sortedm2m,fabrique/django-sortedm2m,gradel/django-sortedm2m,gregmuellegger/django-sortedm2m