v9.11.0

• Symfony integration: Extended use of constants, response classes, DI tags & listeners, more YAML routing, command annotations
• Improved extensibility of user mgmt
• Forms: DM schemas as PHP, improvements for subforms, custom types, and nonpersistent fields
• Asgard: Copy support for root objects/trees
• Invoicing: Improve sending of invoice mails & payment reminders, new default status
• Dialogs/workflows: More flexibility, incl. nesting & custom buttons
• Dependencies:
  • dropped PHP 7.4 and 8.0 support
  • added PHP 8.4 & 8.5 support
  • dropped Symfony 5 support
  • added Symfony 8 support
  • updated elfinder, jquery, jquery ui, fancytree, easymde, fullcalendar, chart.js
  • improved Markdown handling by switching to a better-maintained library
• DX: debugging & unittest improvements, support newer versions of PHPUnit
• Housekeeping: Reduced superglobals, added typehints, cleanups, simplifications