Added SPI and nRF24L01+.
Fixed a small error in fjoy.c
SPI done (?).
Modified the comments style in iic.h
SPI working.
Fixed a comment in grftx.
nRF24L01+ commands and registers added.
Working on nRF, testing Batt.
Batt working.
Sketch on nrf
Renamed some files, made SPI SS toggling manual, and finished (untested) nRF initialization.
Work on nRF, PTX almost done, RX_DR handling missing.
PTX done, not fully tested.
Removed some prints. Testing.
Small changes in nRF, RX pending.
nRF done. Maybe.
nRF working.
Merge remote-tracking branch 'upstream/master' into control

Conflicts:
	HC12Lib.mcp
	HC12Lib_Data/CWSettingsWindows.stg
	Sources/FJOY/fjoy_disp.h
	Sources/RF/rfrx.c
	Sources/RF/rftx.c
	Sources/RF/rftx.h
	Sources/ivt.c
	Sources/main.c