Save and load key & chosen_by
Use "setlist_key" to keep original "key" intact
Use setlist keys for View All
Update Composer

Bugfix for ChordsifyPHP
Transpose output
Chords when editing setlist
Bugfix: deleting a song and adding one

Never decrease nextIndex
Only use song title in popup
Merge from master
Merge pull request #8 from chrisjbaik/bugfix-song-key

Bugfix: song key