- Require contao/core-bundle and calendar-bundle ^6.0
- Render the setup check and the notification help as input_field
callbacks instead of a custom backend widget; the fields no longer
create a virtual jsonData column
- Load the backend style sheet through contao.backend.custom_css and
remove the menu listener (tooltip workaround for Contao 5 included)
- Tell editors when the Notification Center is not installed instead of
linking to a module that does not exist
- Generate category aliases with the slug settings of the calendar page
so that umlauts are transliterated for German sites
- Always return a RecordLabel for the category list, export stored
values as they are, remove the decodeEntities options and the legacy
"events" URL parameter, use array notation for the price columns
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
