History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 353–361 on bc489b6c7f69749ef87bb7d13df4c7e85ebcbd96b64a95ab1d27acfda66c0f7d. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 353,361:crates/oxy-server/src/lib.rs.