BUGFIX: prevent 20Hz display refreshing
ADD: Ready state for waiting for key release
display statemaschine ported to core-node.
BUG: display crashes!
CS pin moved to display module
BUGFIX: now autoincremented is used for cursor-positioning
BUGFIX: 1ms relative delay was not enough -> incremented to 2ms
ADD: Cursor start position is set manually
ADD: Ready-state