Python 3.11 Support

[brianwawok]

Looks like some tweaks are going to be needed to work in Python 3.11?

https://docs.python.org/3/whatsnew/3.11.html#enum

File "/python3.11/site-packages/enumfields/enums.py", line 17, in new
attrs._member_names.remove('Labels')
^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'dict' object has no attribute 'remove'

[akx]

My fork https://github.com/akx/django-enumfields2 (https://pypi.org/project/django-enumfields2) is compatible with Python 3.11. It's a drop-in replacement, so just pip uninstall django-enumfields and pip install django-enumfields2.