New features: 

- Binaural engine (engine 4): oscillator pitch adds 0 to 40Hz to the main oscillator. The beat frequency stays constant over main frequency sweep

- LFO engine (engine 5): simple LFO with Aux Input 1 being a Reset and Aux 2 being a Hold control. Waveform used are from the current wavebank for now.

- Save / Load settings: hold switch 1 and 4 for 2 seconds to save the current settings, hold switch 2 and 3 to load the saved settings. The saved settings will be loaded on boot.

 Fixe: 

- SD card is now mounting consistantly. Previously some SD card would struggle to mount and Spice would take a while to boot.