uncommented temperature-related prelude commands and cleaned up comments vs gcode commands
now blocks waiting for ok from printer. Useful for waiting for long commands (heating, homing) to finish.
added penup pendown functionality
changed attribution
formatted code
speed is different for pen_up and pen_down and retracts when pen is up. Multiple pen_down or pen_up calls will not result in multiple retractions
code redundant because of send_gcode.py
bugfix did not return correct type for snapgcode.xml