Revert "Revert "One more async?""

This reverts commit 4e0adafb85.

index.html

@@ -377,7 +377,7 @@
       };
     </script>
     <script async src="https://cdn.jsdelivr.net/npm/vanilla-lazyload@13.0.1/dist/lazyload.min.js"></script>
-    <script src="https://code.iconify.design/1/1.0.4/iconify.min.js"></script>
+    <script async src="https://code.iconify.design/1/1.0.4/iconify.min.js"></script>
   </body>
 
 </html>