History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 373–381 on d3cd7ef95da674d201fbef0231b2d467bb6335e2b57513b921842b2bb4931b13. 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 373,381:crates/oxy-server/src/lib.rs.