Better note select in StepSequencer

[Chris Lowis]

Pressing the left and right buttons to select the current sequenced
note isn't very intuitive, it's easy to lose track of where you are,
particularly when skipping several empty screens.

I'd like to introduce a "select" screen. This would be the default,
and the note could be selected by pressing in that order. To get back to this screen from a selected note, I'd hit again.

I could make this screen a bit fancier by flashing the pads when that note plays.

This would also give me a nice place to have the live playing and
recording of the notes, as well as a place to audition the samples.

[Chris Lowis]

Closed by cf17f06.