History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 339–347 on b3e60590316403ebed833ca1d19262bd7df3365f20010ae74c55946210c2d63c. 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 339,347:crates/oxy-server/src/lib.rs.