improve targeted transposition

[diemoschwarz]

• [ ] simplify tutorial 11 main patch
  • [x] remove s/r,
  • [x] remove useless options
  • [ ] use camu.menu throughout
  • [ ] use std. imubu control
• [x] add MIDI input
  • [x] also use pitch bend
• [x] fix synthesis-keymixer sub-patch:
  • [x] remove outside order dependency
  • [x] make threshold 0 work
  • [x] make it work with beat mode
• [ ] simplify synthesis-keymixer sub-patch:
  • [ ] rename
  • [ ] remove s/r
  • [ ] remove soundset stuff
• [ ] #129
  • [ ] factorise transp. source (fnnn or pitch)
  • [ ] factorise transp. apply, using soundsets or not?