Fixed a weird glitch with heaters.c that caused a hard fault with the new TiVa ware.   seems to have been caused by setting ADCSPEED to 1MSPS. Commenting it out seems to have fixed the problem and there seem to be no ill effects
Added M115 (compatability) which just sends OK message.  Added support Tx that just sends OK message since there is only one extruder.  Added a quick check to not ask for a resend if an empty line is received.  Changed resend message to use standard rs format
Updated extruder esteps for my machine.