#20 Metronome vs time signature

[M Gagnon]

Initial feature request :

Ternary meters (3/8, 6/8, 9/8, and 12/8) don't seem to work properly when the
click is turned on. The click makes them seem like variations of quarter time.
E.g., 12/8 acts like 6/4 (six beats of quarters). It would be better if the click
either went to dotted quarters in that case, or 8th notes.

Only problem left is what sounds at the end when you record and go past song bounds

[M Gagnon]

For reference the other parts of the fix are in r2088.