v0.35.1: performance, AGPL licensing and documentation overhaul

- Web Server reads static files inline; proxy middleware chain flattened
- About window with license summary and project links; AGPL-3.0-or-later
- Rewritten documentation: feature list, screenshots, performance guide
- Fix false spikes in per-Vhost request-rate charts

src/forwarding/peer_formatting.rs

@@ -35,6 +35,12 @@ impl PeerFormatting {
             untrusted_headers: std::sync::Mutex::new(None),
         }
     }
+    /// Text form of the peer address when it needed no canonicalization.
+    pub(crate) fn raw_peer_text(&self) -> Option<&str> {
+        (self.peer.ip() == self.peer_ip)
+            .then(|| self.peer_header.to_str().ok())
+            .flatten()
+    }
     fn cached_untrusted(&self, authority: &HeaderValue, tls: bool) -> Option<HeaderMap> {
         self.untrusted_headers
             .lock()