Set steps/mm for my extruder
Set key delta params for my Kossel
Add delta calibration helper script

Run ./create_calibration_gcodes.py; create G70-72 + G79.

G70, G71, and G72 put the effector near the X, Y, or Z towers,
respectively.

G79 puts the effector in the center.

When used with a dial test indicator, this script
enables super-easy calibration to within 0.001 in just a few iterations.
Slightly reduce max velocity

Was occasionally getting skips for fast upward motion.
Add script to update home offsets + set for my Kossel