sequencer key trigger auto-transpose & cue

goal: break up the static feeling of the sequencer, especially for things like basslines. proposal: add a toggled mode of the sequencer which triggers the seq when you play a note. you specify a "base note", and then when you play, the sequence plays, transposing the note you're playing relative to base note.

i think it may need to be a 3rd state in addition to "on/off". because it's not "off" when triggered. that would be pretty confusing to see the seq completely off, press a key, and nothing happens. And it's not "on" because that would also be confusing ("can't get the sequencer to play"), especially when clicking the little indicators apart from seq view. so it would change the color of the sequencer indicator IMO.

that would also pave the way for an arpeggiator mode.

[x] seq mode support
[x] base note gui item & listen
[x] seq player recalc on note

thenfour / digifujam

sequencer key trigger auto-transpose & cue #255