History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 379–387 on 5552e69c732539b5d251a7dd1c650de7e26e4339f679ec08675af0b6867517d5. 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.