message: Renamed to avoid clash with currentContext
  The scene State isn't the same as the state on currentContext
diff: @@ -7,8 +7,8 @@ var useSceneNavigating = (handler: (data, url, history, currentContext) => void)
  var {stateNavigator} = navigationEvent;
  var beforeNavigateHandler = (state, data, url, history, currentContext) => {
  var crumb = url.split('crumb=').length - 1;
  - var {crumbs, state: currentState} = stateNavigator.stateContext;
  - if (crumbs.length === crumb && currentState === state)
  + var {crumbs, state: sceneState} = stateNavigator.stateContext;
  + if (crumbs.length === crumb && sceneState === state)
  handler(data, url, history, currentContext);
  return true;
  }
  