message: Delegated configure to props stateNavigator
  Keeps the main stateNavigator as source of truth for states and historyManager. Always clone from this stateNavigator so keep the latest states and historyManager
diff: @@ -17,6 +17,7 @@ class NavigationHandler extends React.Component<{ stateNavigator: StateNavigator
  if (oldUrl === this.props.stateNavigator.stateContext.url) {
  var stateNavigator = this.props.stateNavigator.clone(this.props.stateNavigator.historyManager);
  stateNavigator.stateContext = this.props.stateNavigator.getStateContext(state, data, url, asyncData, history);
  + stateNavigator.configure = (stateInfos, historyManager) => this.props.stateNavigator.configure(stateInfos, historyManager);
  stateNavigator.getNavigateContinuation = this.props.stateNavigator.getNavigateContinuation;
  return { stateNavigator };
  }
  