History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 390–398 on ebb9210bad0c3ac1b8c02e46b6c24469f0ea951ab2e1c6580338ba53bd69732e. 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 390,398:crates/oxy-server/src/lib.rs.