PrinterMain: send responses to buffered commands sooner, and not after long calculations in the planner
PrinterMain: send responses to buffered commands sooner, and not after long calculations in
the planner

johnkingsley/aprinter,johnkingsley/aprinter,johnkingsley/aprinter,fixator/aprinter,ambrop72/aprinter,johnkingsley/aprinter,ambrop72/aprinter,ambrop72/aprinter,fixator/aprinter,ambrop72/aprinter,fixator/aprinter,fixator/aprinter,johnkingsley/aprinter,fixator/aprinter,ambrop72/aprinter,ambrop72/aprinter,fixator/aprinter,johnkingsley/aprinter,ambrop72/aprinter,johnkingsley/aprinter