pinax.notifications is a nice package but it uses the decorator @python_2_unicode_compatible and it apparently still tries to get it from django.utils.encoding rather than six.
This is after running pip3 install --upgrade pinax.notifications just now.
Is there a more up-to-date package that I should be using now?
Sorry to hear you are thinking about moving on. We have a PR in the works for pinax-notifications that will drop EoL Python/Django versions and add the versions that are officially supported. The PR hasn't passed all the tests yet, but hopefully will soon. https://github.com/pinax/pinax-notifications/pull/94