* fix sequence reset logic
* COM/IO works even if sequence is stopped (uses active step)
* tweak knob colours

* changed polyphony logic (we don't want to "broadcast" monophonic
  channels in the mixer, as downstream these will be summed via
  getVoltageSum, see e.g. VCMixer in Fundamental)

* removed alt-drag (won't be Rack 2 compatible)
* cleaned up clock div
* made COM_8_IN_1_OUT default
* added reset grace period

* remove clipping from Morphader (according to voltage saturation part of voltage standard)

* ADSR: added missing .svg, and removed unused variable

- only downsample a source wave generated at higher sample rates
- switch to Pade approximation of sin
- new panel SVG from Befaco
- fix LED logic

Moved all chowdsp library code into specific header.
Updated .json

Made final row behaviour configurable in the menu (as is the case in the hardware).

* some code cleanup
* Percall strength should be calculated every sample