4.2.1

• Large libraries now load without freezing the app at start
• Android: the app now restores its open screens, the editor's unsaved text, the song filter and any open searches after the system kills it in the background
• Sync now asks before deleting most of the library when the cloud folder looks emptied, renamed or replaced, offering to delete the files here too or re-upload them instead
• Settings now explains why connecting a sync account failed instead of silently showing the Connect button again
• Sync credentials are now kept in the Android Keystore and the iOS Keychain
• The web app now shows a message and a retry button when it fails to load or its script fails to download
• Desktop now asks about unsaved editor text before the app is closed or quit, and finishes a running save first
• Fixed the Setlists screen and the song pager crashing on a setlist that names the same song twice
• Fixed quick changes to a song or setlist — such as tag, language and transposition taps and swipe removals — undoing each other
• Fixed several transposition and tab display bugs, and preserved line endings and blank lines in ChordPro edits
• Fixed a number of import and export issues: files with non-UTF-8 accents, long file names, case-only renames, setlists whose only change was a description, and imports left blocked by another dialog
• Fixed the song picker and the song languages dialog losing their selection on rotation
• Smoothed out scrolling, editor typing, transitions and other animations across the app