constructor(conf = { time: 0.7, delay: 0, ease: 'Linear.None' }) {
    super({ type: 'animation' });

    const { from, to, time = .7, delay = 0, ease = 'Linear.None', parent } = conf;
    this.from = from;
    this.to = to;
    this.ease = ease;
    this.parent = parent;
    this.proxyAttr = {};
    this.isFFAni = true;
    this.autoAlpha = false;

    this.time = DateUtil.toMilliseconds(time);
    this.delay = DateUtil.toMilliseconds(delay);
    this.tween = this.createTween();
  }
FFAnimation - The class used to animate the display element

####Example:

    const animation = new FFAnimation({ ...animation, parent });
    animation.start();
    animation.stop();


####Note:
    Easeing function
    Type In-Out-InOut
    Ease Quadratic Cubic Quartic Quintic Exponential Circular Elastic Back Bounce

@class