History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 379–387 on d256e826ac5d531239d11bff64c5c17833f3250ae78a16c00d0e4f0320c9478d. 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.