History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 410–418 on c96354484bd96287c36037349c6bd02e0018bf790bfc04663f8c4efb894d0c13. 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.