add '$this' feature to lambda functions

fix large size on startup
fix invalid key parsing

sources/awesomewidgets/extitemaggregator.h

@@ -174,6 +174,10 @@ private:
             }
         }
 
+        // sort items
+        std::sort(items.begin(), items.end(), [](const T *lhs, const T *rhs){
+            return lhs->number() < rhs->number();
+        });
         return items;
     };