checkp
check
wip
unable to flip pins on arduino for some reason
implements test case that pushes pin 17 high when t is pressed
pushes a pin high using the aim method in the motorThread for INK
enable works for INK by itself using home()
X and INK compete with each other somehow, here INK goes and X has short starts with home(), going to try to move more out of motorThread
problem was X_LIMIT_PIN was shutting off X, not a race condition...
clean shutdown of all threads on exit
new code is functional
  * can enable motor drivers properly via threads
  * can drive multiple steppers simultaneously without stepping on each other
  * reacts well to the X limit switch