Expand the test suite to include Django 2.2, 3.0, 3.1, 3.2, 4.0, 4.1, 4.2. Tests are run (when compatible with the Django version being tested) in Python 3.6, 3.7, 3.8, 3.9, 3.10, 3.11, 3.12.
Outside of the change from ugettext_lazy() to gettext_lazy() in PR #117, first released in django-improved-user v2.0a2, this does not include any new features or bugfixes since v1.01
Changelog since v2.0a2: v2.0a2...v2.1.0
Changelog since v1.01: v1.0.1...v2.1.0