History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 353–361 on 4213c41dfc6400877b9428dfcc63b936c1cd044f8ab27a71fa1409f39ff54da7. 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.