Remove SLAVE and TEST as they are not needed.
Working reception of NEC IR data.

Has this mess ever worked before? There were some idiotic bugs!
Add plotting script.
Plot a bit of SPACE before actual data to give a more intuitive
visualization.
Parsing of NEC codes works quite reliably. The first time.

Somehow, the repeat codes cause bugs :(
Implement most of the original IR commands.
Add remote keycode overview.
Moved IR RX interrupt handler back into real IRQ.
updated RL code to 2.4f, tx still buggy