message: Update only when state changes
  Checking state against props doesn't work with willNavigate because it changes state independent of prop and want that to rerender
diff: @@ -29,8 +29,8 @@ class Scene extends React.Component<NavigationMotionProps, NavigationMotionState
  componentDidMount() {
  BackHandler.addEventListener('hardwareBackPress', this.handleBack);
  }
  - shouldComponentUpdate(props, state) {
  - return state.navigationEvent === props.navigationEvent;
  + shouldComponentUpdate(_nextProps, nextState) {
  + return nextState.navigationEvent !== this.state.navigationEvent;
  }
  componentWillUnmount() {
  BackHandler.removeEventListener('hardwareBackPress', this.handleBack);
  