Release 3.0.0

Breaking changes:

• Removed support for Django 3.0
• Removed changeReason in favor of _change_reason (see 2.10.0)

Full list of changes:

• Removed support for Django versions prior to 2.2 (gh-652)
• Migrate from TravisCI to Github Actions (gh-739)
• Add Python 3.9 support (gh-745)
• Support ignore_conflicts in bulk_create_with_history (gh-733)
• Use asgiref when available instead of thread locals (gh-747)
• Sort imports with isort (gh-751)
• Queryset history.as_of speed improvements by calculating in the DB (gh-758)
• Increase black and isort python version to 3.6 (gh-817)
• Remove Django 3.0 support (gh-817)
• Add Django 3.2 support (gh-817)
• Improve French translations (gh-811)
• Remove support for changeReason (gh-819)