History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 410–418 on e5f8eb2a2006f2d7fc782871edc27cfefc8c7f6902198507a5fa7e8b3e768316. 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 410,418:crates/oxy-server/src/lib.rs.