- added `AppConfig.default_auto_field` to lock ID-fields in order to avoid migrations if projects use a different field in their settings
3.0.1
===================
- added missing migration due to updated `holidays` version - fixed `holidays` on version `0.18` -> newer versions may result in new migrations which may be problematic if this app is integrated as a third-party-app
3.0.0
===================
- updated the testing environment - dropped django<3.0 support - added support for django 4.0 and 4.1 - enabled newer versions for `holidays` dependency