message: Inlined state scene creation
diff: @@ -31,8 +31,7 @@ class NavigationMotion extends React.Component<NavigationMotionProps, Navigation
  }
  static getDerivedStateFromProps({stateNavigator}, {scenes: prevScenes}) {
  var {crumbs} = stateNavigator.stateContext;
  - var scenes = {...prevScenes, [crumbs.length]: true};
  - return {scenes, rest: false};
  + return {scenes: {...prevScenes, [crumbs.length]: true}, rest: false};
  }
  getSharedElements(crumbs, oldUrl) {
  if (oldUrl === null || crumbs.length === oldUrl.split('crumb=').length - 1)
  