MUMC v5.3.16-beta

v5 BETA Updates 20240107

• Jellyfin API changes:
  • Stop using POST /Users/{UserId}/Items/{ItemId}/UserData
  • Start using POST /Users/{UserId}/PlayedItems/{ItemId}
  • This only affects users importing played states from Trakt
• API key (aka Auth Key) updates
  • Stop permanently using API key returned from /Users/AuthenticateByName
  • Instead use the auth key from /Users/AuthenticateByName to create a key visible in the UI for "MUMC"
  • Use existing "MUMC" named key in GUI if it exists; else create one