The app is now ready for Rudolstadt Festival 2026.

Changes:
  - Updated for Rudolstadt Festival 2026
  - New look for iOS 26
  - New friend features: share saved concerts and artists
  - World map view for all artists
  - New grid view for artists
  - Improved artist pages
  - Better maps and location previews
  - Redesigned donation page
  - Use backup data when official data is unavailable
  - Many small bug fixes and improvements