History of router 1 change

In crates/hub/src/lib.rs, lines 238–243 on v0.9.21. 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 238,243:crates/hub/src/lib.rs.