message: propagate default includes out of search index
  we aren't putting any in there yet, but this will be needed once we do
diff: @@ -126,11 +126,19 @@ class Searcher {
  page.cursor = encodeURIComponent(JSON.stringify(last.sort));
  }
  + let includes = [];
  let data = documents.map(
  - document => toJSONAPI(document._type, document._source).data
  + document => {
  + let jsonapi = toJSONAPI(document._type, document._source);
  + if (jsonapi.includes) {
  + includes = includes.concat(jsonapi.includes);
  + }
  + return jsonapi.data;
  + }
  );
  return {
  data,
  + includes,
  meta: { page },
  };
  }
  