• The reporting of Total Accesses in the server-status page was fixed. It
  counted HTTP/2 requests twice. Test case added for this. Fixes PR 66801.
• New directive H2ProxyRequests on|off to enable handling of HTTP/2 requests
  in a forward proxy configuration. In addition to ProxyRequests for
  HTTP/1.1. Set both directives to on to allow both HTTP versions.
• Fixed an inconsistency in main connection io state after the connection
  write encountered an error. Related to PR 66649.