Disabling output processing is necessary since otherwise
sending a LF character (ASCII 0x0A) will automatically insert
a CR character (ASCII 0x0D).
Disabling input processing should prevent this when
receiving data.
* Support DMX RGB lights (PAR lights, spotlights, wash lights, etc)
* Configurable R/G/B channel and Brightness/Master channel
* Add configurable parameters to serial_port needed to configure a port for DMX
* Add DMX tab to settings