apply some Java 17 syntactic niceties.
got rid of some superfluous TODOs
got rid of last FIXME in code: Clarified dismissal of tunings dialog.
got rid of setPlayNotes
Made right-left swiping in panels perform more naturally.
Got instruments view to center on the current instrument.
Fixed bug in wear regarding double-swipe in the Tunings view.
onSingleTapUp() gets rid of the 1/3 sec delay imposed by onSingleTapConfirmed().