Added initial stab at diagram tool.
Make test programme generate wiring diagram coloured by order.
Add focus on cabinet/rack/slot.
Proof-of-concept realtime wiring anumation.
Basic UI for interactive wiring guide.
Include basic key/mouse bindings.

Still TODO:
* TTS
* LED
Friendly names for sockets.
Added LED support.
Added commandline arguments to IWG.
Make machine diagram produce animations of wiring plans.
Updated README.