message: Exported scene on public api
diff: import MobileHistoryManager from './MobileHistoryManager';
  import NavigationMotion from './NavigationMotion';
  +import Scene from './Scene';
  import SharedElement from './SharedElement';
  import SharedElementMotion from './SharedElementMotion';
  -export { MobileHistoryManager, NavigationMotion, SharedElement, SharedElementMotion };
  +export { MobileHistoryManager, NavigationMotion, Scene, SharedElement, SharedElementMotion };
  