Rewrite pitchbend functions, and implemented the same mecanism as for notes, to dissociate internal usb MIDI input.
Added all note off control change, from USB midi (send internal note off) and to usb MIDI (when function switch is pushed on).
Added pitchbend range setting, setable by moving pitchbend wheel when in function mode.
Added 1 ms offset to attack an release, to avoid clipping with 0 value. It seems that it's already implemented in the Audio Library, so it needs mors investigation.
Added filter mode function, to switch for band pass to a band stop filter with knob mid-course.
Modified readme to specify libraries used.
Pierre-Loup Martin