Increased angles for outdoor use at Burning Man. Added loop time and actual propagation delay to diagnostics. Decreased PID time to 15ms. Added calibration values to manual mode sensor printout.
Worked great at Burning Man 2013. Added boolean to enable slew rate control (currently disabled in horz direction). PID values now come from the head. Increased horz P to 255 for wide open control. Increased deadbands back to 10.

Fixed bug where PID values overflowed. Now dividing before multiplying but we should refine this.

Removed old files.