History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 379–387 on 30d5fac7560dea15f032e006ddd6d00a693ff81a8b1eb33875be65836fee74c2. 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.