Fixed issue #318 - DRO in Marlin inch mode
Fixed issue #318 - DRO in Marlin inch mode

Marlin always reports positions in mm, regardless of whether it is in inch (G20) or mm (G21) mode.
cncjs/cncjs,cheton/piduino-grbl,cheton/piduino-grbl,cheton/cnc,cheton/cnc,cncjs/cncjs,cncjs/cncjs,cheton/piduino-grbl,cheton/cnc