rgcAudio Pentagon I v1.21 released

- USER waves 3-4 can now load FULL wavetables.
- Inertial Knobs.
- New knobs (Optional - with bigger position mark)
- P1 built in Load/Save Program/Bank will load both FX/synth version indistinctly.
- File Selector for USER waveforms is now resizable.
- Various bug fixes
- SONAR version now fully compatible with DirectiXer