Rev 0.9: User can now delete presets
This revision adds an additional configuration state after frequency and PWM period tuning: deletion of the preset. This will remove the preset from the available presets we can cycle through. The only way to bring it back is with a reset to defaults, which can now also be done by pressing the configuration button (rotary encoder or one of the buttons in the other modes) while the ThrottleBlaster is powered on.