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.. _4.0: https://github.com/matthiask/feincms3/compare/3.6...4.0
- Added Django 4.1 to the CI matrix.
- Specified a custom plugin button for the old richtext plugin.
- Changed the linked CKEditor version to 4.19.1.
- Added flake8-bugbear.
- Suppressed the rendering of the "Save as new" button in the move form.
- Added the ``render_regions`` hook to the ``RegionRenderer``.
- Added ``**kwargs`` to ``Snippet.register_with``.
- Changed the ``upload_to`` value of images to a version which is less likely
to produce collisions.
- Stopped importing ``feincms3.plugins.richtext`` unconditionally, it depends
on html-sanitizer_.