code: function buildNewOptions (options, newUrl) {
  
      // Old method
      /*
      var o = createDefaultOptions(newUrl);
  
      // Copy only options attributes that are in the options used for the previous request
      // Could be more simple ? ;-)
  
      o =  _.extend(o, _.pick(options, _.without(_.keys(o), "url")));
      */
      var o = _.clone(options);
      o.url = newUrl;
  
  
      o.depthLimit = options.depthLimit;
      o.currentRetries = 0;
  
      if (options.canCrawl) {
        o.canCrawl = options.canCrawl;
      }
  
      return o;
  
   }
docs: Make a copy of an option object for a specific url
  
  
  @param the options object to create/copy
  @param the url to apply into the new option object
  @return the new options object