Fixes a bug where the normalizeToRange() function always returns '1' when passing the value of '1.'
Fixes a bug where the normalizeToRange() function always returns '1' when passing the value of '1.'

cheton/piduino-grbl,cheton/piduino-grbl,cheton/cnc,cncjs/cncjs,cncjs/cncjs,cheton/piduino-grbl,cheton/cnc,cncjs/cncjs,cheton/cnc.js,cheton/cnc,cheton/cnc.js,cheton/cnc.js