History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 339–347 on ea954efde27cfcc47ba27139a727ae5aea2bd0556eb7a5f566fce652594a745b. 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 339,347:crates/oxy-server/src/lib.rs.