message: Changed from hash to HTML5
  HTML5 history manager is the better default. Could tree shake Hash away
diff: import NavigationHandler from './NavigationHandler';
  -import { StateNavigator, StateContext, HashHistoryManager } from 'navigation';
  +import { StateNavigator, StateContext, HTML5HistoryManager } from 'navigation';
  import * as ReactDOM from 'react-dom';
  class AsyncStateNavigator extends StateNavigator {
  @@ -7,7 +7,7 @@ class AsyncStateNavigator extends StateNavigator {
  private stateNavigator;
  constructor(navigationHandler: NavigationHandler, stateNavigator: StateNavigator, stateContext: StateContext) {
  - var inertHistoryManager = new HashHistoryManager();
  + var inertHistoryManager = new HTML5HistoryManager();
  inertHistoryManager.init = () => {};
  super(stateNavigator, inertHistoryManager);
  this.navigationHandler = navigationHandler;
  