History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 379–387 on 0389c3e82f6c6455a70b858706018bb1df88650071b8ec0c1471831ada895686. 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.