Method onKeyUp

src/controller/Controller.js:56–58

* Called on keyup. Sets flag to 2 if key is being watched. * @param {KeyboardEvent} e * @memberof Controller

(e)

   * @memberof Controller
   */
  onKeyUp(e) {
    this.onKey(e, 2);
  }

  /**
   * Called on window blur, sets button state to up if button was down;