History of HubBackend::new 4 changes

In crates/hub/src/protocol.rs, lines 47–55 on 8aa5ef384ef18424402f7417566ca62c03326a2769205b694d4a07f55e7c6a5b. 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 47,55:crates/hub/src/protocol.rs.