Add HalfTurnRight 'basic' feature, Master Stairs to accommodate differnt flight of stairs
Add HalfTurnRight 'basic' feature, Master Stairs to accommodate differnt flight of stairs

Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master,Fat-Zer/FreeCAD_sf_master