Additional tweaks to make quantize hold kick in more easily when sliding chords in close formation.
Implemented complete run-time tweaking of pressure sensitivity.
In the right-most column there are now 3 hidden settings in the Global Settings display that default to the values of the September sensors:
* row 0 : value of low Z pressure that's needed to start a touch
* row 1 : value of feather Z pressure that's the minimum to continue a touch
* row 2 : the range of the Z pressure, measured in raw data