List of v13 Breaking Changes

So far (as of v13t3):

• Foundry v12 support [FEATURE] Foundry V12 Support #650

Appv2 Stuff

• Update combat tracker sidebar
• Update combat tracker config extensions (Possibly move the settings to a new location)
• Update token config extensions
• Overhaul css to play nice with the new v13 styling
  • Journal styling is broken for dark mode and collapsing the toc permanently hides it
• (Optional) Per-application theme overrides for system themes
• Evaluate if the compendium banners need their dimensions adjusted
• Appv2 hooks recieve an HTMLElement instead of jquery opion
  • Compendium tab button injection
  • Combat tracker config settings injection
  • TokenConfig and PrototypeTokenConfig options injection
  • createChatMessage

API Changes:

• Evaluate whether builtin TokenDocument#getOccupiedSpacesOffsets can replace custom Token#getOccupiedSpaces
• {{select}} → {{selectOptions}} in templates
• Remove custom circle token shape code in favor of native gridless elliptical tokens
  • Ensure that tokens are given a default elliptical shape (override TokenDocument#_initializeSource)
• TinyMCE → ProseMirror for editors
• Targeting API change
• Many things are moving from global to namespaced under foundry

Features

• CONFIG.queries for socketless cross client communication
• Disable token image rotation for default retrograde tokens.
• Provide a custom turn marker image

Bugs

• Migration hangs in certain scenarios, including the presence of scenes with unlinked tokens.