History of HubBackend::new 3 changes

In crates/hub/src/protocol.rs, lines 44–52 on 155cab142b63cc2fbfd0807d7168722ca32f8d93eb55a62cd5bd0eb8142188cb. 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 44,52:crates/hub/src/protocol.rs.