Version 15.4.1

As starting Chrome 55, there is a new event `auxclick` to handle middle click, and `click` doesn't trigger by middle click anymore
https://developers.google.com/web/updates/2016/10/auxclick
[DOMTopLevelEventTypes.TOP_LOADED_METADATA, 'loadedMetadata'],
  [DOMTopLevelEventTypes.TOP_LOAD_START, 'loadStart'],
  [DOMTopLevelEventTypes.TOP_LOST_POINTER_CAPTURE, 'lostPointerCapture'],
  [DOMTopLevelEventTypes.TOP_MOUSE_MOVE, 'mouseMove'],
  [DOMTopLevelEventTypes.TOP_MOUSE_OUT, 'mouseOut'],
  [DOMTopLevelEventTypes.TOP_MOUSE_OVER, 'mouseOver'],
  [DOMTopLevelEventTypes.TOP_PLAYING, 'playing'],
  [DOMTopLevelEventTypes.TOP_POINTER_MOVE, 'pointerMove'],
  [DOMTopLevelEventTypes.TOP_POINTER_OUT, 'pointerOut'],
  [DOMTopLevelEventTypes.TOP_POINTER_OVER, 'pointerOver'],
  [DOMTopLevelEventTypes.TOP_PROGRESS, 'progress'],
  [DOMTopLevelEventTypes.TOP_SCROLL, 'scroll'],
  [DOMTopLevelEventTypes.TOP_SEEKING, 'seeking'],
  [DOMTopLevelEventTypes.TOP_STALLED, 'stalled'],
  [DOMTopLevelEventTypes.TOP_SUSPEND, 'suspend'],
  [DOMTopLevelEventTypes.TOP_TIME_UPDATE, 'timeUpdate'],
  [DOMTopLevelEventTypes.TOP_TOGGLE, 'toggle'],
  [DOMTopLevelEventTypes.TOP_TOUCH_MOVE, 'touchMove'],
  [DOMTopLevelEventTypes.TOP_TRANSITION_END, 'transitionEnd'],
  [DOMTopLevelEventTypes.TOP_WAITING, 'waiting'],
  [DOMTopLevelEventTypes.TOP_WHEEL, 'wheel'],
];
const eventTypes: EventTypes = {};
const topLevelEventsToDispatchConfig: {
  [key: TopLevelType]: DispatchConfig,
} = {};
function addEventTypeNameToConfig(
  [topEvent, event]: EventTuple,
  isInteractive: boolean,
) {