django-23916

For demonstrating that django/django#12313 works to fix the ticket.

python -m venv venv
source venv/bin/activate
pip install -e path/to/django
python manage.py makemigrations
python manage.py makemigrations

makemigrations will repeatedly generate new migration files for the Author model's case change (from AuThor) before the fix in that PR. Afterwards, no migration files will be generated.