old_contents: import jquery from 'jquery';
  import Backbone from 'backbone';
  import Foundation from 'foundation';
  
  
  $(() => {
  	Backbone.$ = $;
  	Backbone.history.start();
  
  	Foundation.init();
  });
  
new_contents: import jquery from 'jquery';
  import Backbone from 'backbone';
  import Foundation from 'foundation';
  
  
  $(() => {
  	Backbone.$ = $;
  	Backbone.history.start({pushState: true});
  
  	Foundation.init();
  });
  
subject: Enforce pushState api