History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 379–387 on 74b4a3c62ea49a14291109dfc144c7f840f6af35c6a9e8f150ce53528fdf6e04. 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.