Support Modifiers for phrases

[zuggamasta]

Modifiers apply a modification to the note on their left.

Note Modifiers:

• [ ] 'S' - Staccato, length Play note only for fixed amount of time
• [ ] 'T' - reTrigger, divider Retrigger the current note instead of playing it just once, amount is given by divider. 2 -> twice 4 -> four times
• [ ] 'H' - Hold note Do not set stop note until next input.
• [x] 'R' - Random, range play a random note in the range up and down from the set note. E.g. base note 'C 5'

  Step modifiers

• [ ] 'B' - Backwards, speed Step backwards in the phrase chain until the start is hit, manipulate backwards speed
• [x] 'J' - Jump, frequency, randomly skip this step '

[zuggamasta]

Idea for retrig

If last note == None:
   pass
else:
   Stop last note that has been available

If note == None:
   pass
else:
  Play note 
   Last note == note 

If CMD =! retrig:
   Wait for one note length
Else:
    Retrig value = note retrig value 
     If retrig value > 0:
         wait for one note / retrig 
         Retrivalue -= 1

If CMD == stop:
   Stop last note
   Last note = None