eturns the animation timing by mixing in properties from `config` to the defaults defined
     * by the animation.
     */
    timingFromConfig: function(config) {
      if (config.timing) {
        for (var property in config.timing) {
          this.animationTiming[property] = config.timing[property];
        }
      }
      return this.animationTiming;
    },

    /**
     * Sets `transform` and `transformOrigin` properties along with the prefixed versions.
     */
    setPrefixedProperty: function(node,