change optimize_path_order to be a Option<bool> so we can set false or true#99

sameer merged 1 commit intosameer:mainsameer/svg2gcode:mainfrom

ErwanMAS:be_sure_that_optimize_path__is_a_boolErwanMAS/svg2gcode:be_sure_that_optimize_path__is_a_boolCopy head branch name to clipboard