History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 379–387 on 827281eed2edba36efa3786793efd72b79ec415f6643103c6e036e5b13fd50ff. 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 379,387:crates/oxy-server/src/lib.rs.