class
 Stepper
            max:Null<Float>        
                            min:Null<Float>        
                            pos:Float        
                            precision:Null<Int>        
                            repeatInterval:Int        
                            How often this button will dispatch multiple click events while the the mouse is pressed within it
                    repeater:Bool        
                            Whether this button will dispatch multiple click events while the the mouse is pressed within it
                    step:Float        
                    