v6.1.0

This releases introduces official Wagtail 2.16 and Django 4 support. It also adds geoencoding support for Mapbox.
We have also reorganized the test suite, changed test runner to pytest and started to add coverage to widgets, more work will be done here in the future.

Added

• Add geocoding support for Mapbox (@marteinn)
• Add Wagtail 2.16 support

Fixed

• Fix: Replace ugettext with gettext (@mariusboe)
• Fix: Add documentation on leaflet settings (@marteinn)
• Fix: Replace test runniner with pytest
• Fix: Drop duplicated tests from wagtailgeowidget/tests