History of HubBackend::new 2 changes

In crates/hub/src/protocol.rs, lines 42–44 on 60f11b71a74091b01385c654b0011014d4036deb49e2576b6d2691242cb260bd. 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 42,44:crates/hub/src/protocol.rs.