5.0 - including django 4 support

This may be the only prerelease. Will have shareholders from our django 4.0 threads give this a try first

What's Changed

• Use gettext_lazy for Python 3 code by @noisecapella in #99
• Updated code style for isort v5 and black 20.8b1 by @smithdc1 in #104
• Dropped support for Python 2.7 and 3.5 by @smithdc1 in #105
• Migrate to GitHub Actions. by @jezdez in #106
• Updated supported versions. Added Django 3.1 and Python 3.9. Dropped Django 2.2 and below. by @smithdc1 in #107
• Rename Django's dev branch to main. by @jezdez in #110
• add django 3.2 and 4.0 support by @umarmughal824 in #112
• Add Python 3.10 support by @Andrew-Chen-Wang in #113
• Jazzband: Synced file(s) with jazzband/.github by @jazzband-bot in #115
• Update Django 4 documentation by @sergioisidoro in #119
• Deprecate python 3.6 by @tony in #120
• Add .pre-commit-config.yaml by @tony in #122
• docs(CHANGES): Update for next release by @tony in #121

New Contributors

• @noisecapella made their first contribution in #99
• @smithdc1 made their first contribution in #104
• @jezdez made their first contribution in #106
• @umarmughal824 made their first contribution in #112
• @Andrew-Chen-Wang made their first contribution in #113
• @sergioisidoro made their first contribution in #119

Full Changelog: 4.0...5.0b1