Hooked up script to board. Added debug flag to allow testing without a board connected. Fixed problems with several gcode commands. It is case sensitive, who knew. Corrected zeroCalibrationPoints. Fixed several bugs that caused internally recorded position to become inaccurate. Added home, m114, and g1 ex commands. Stopped homing at the beginning of calibrateZero. Added additional stats on the screen. Started saving certain variables to a config file. Fixed bug that caused zIncrement to become too high for the current zPos.