parse updated date as well

src/logic.js

@@ -152,9 +152,11 @@ const by_date = (a, b) => {
 
 const event_date_to_date_obj = (event) => {
   const start = pathOr(null, ['date', 'start'], event);
+  const updated = pathOr(null, ['date', 'updated'], event);
   if (start !== null) {
     try {
       event.date.start = new Date(start);
+      event.date.updated = new Date(updated);
     } catch (e) {
       console.error(e);
       return event;