History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 353–361 on 1df1d57a919ccd9c104d968c7fe0f7dc4403e66d95ec5a6de2f628ed697a5ea5. 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.