18.104.22.168 - - [08/Feb/2019:19:14:13 -0800] "GET / HTTP/2.0" 200
HTTP/2 is now supported across all our hosting servers. HTTP/2 provides enhancements to the HTTP 1.1 protocol. These changes will be invisible to you at the application layer but should help improve performance for your site as the bits move across the wire.
If you’d like to learn more about HTTP/2, the politics around TLS support are especially interesting, check out HTTP/2 Explained.