constructor(x, y, scope = globalScope, dir = 'RIGHT', bitWidth = 8) {
        super(x, y, scope, dir, bitWidth);
        /* this is done in this.baseSetup() now
        this.scope['Stepper'].push(this);
        */
        this.setDimensions(20, 20);

        this.output1 = new Node(20, 0, 1, this, bitWidth);
        this.state = 0;
    }
@class
Stepper
@extends CircuitElement
@param {number} x - x coordinate of element.
@param {number} y - y coordinate of element.
@param {Scope=} scope - Cirucit on which element is drawn
@param {string=} dir - direction of element
@param {number=} bitWidth - bitwidth of element
@category modules