upgrading dependencies, fixing immowelt, using hash of price and id as unique identifier for listings

lib/provider/einsAImmobilien.js

@@ -1,18 +1,22 @@
-import utils from '../utils.js';
+import utils, {buildHash} from '../utils.js';
 let appliedBlackList = [];
+
 function normalize(o) {
   let size = `${o.size.replace(' Wohnfläche ', '').trim()}`;
   if (o.rooms != null) {
     size += ` / / ${o.rooms.trim()}`;
   }
   const link = `https://www.1a-immobilienmarkt.de/expose/${o.id}.html`;
-  return Object.assign(o, { size, link });
+  const id = buildHash(o.id, o.price);
+  return Object.assign(o, { id, size, link });
 }
+
 function applyBlacklist(o) {
   const titleNotBlacklisted = !utils.isOneOf(o.title, appliedBlackList);
   const descNotBlacklisted = !utils.isOneOf(o.description, appliedBlackList);
   return titleNotBlacklisted && descNotBlacklisted;
 }
+
 const config = {
   url: null,
   crawlContainer: '.tabelle',