History of HubBackend::new 3 changes

In crates/hub/src/protocol.rs, lines 44–52 on f7bcee49bf24a1b6aad89b20e0f7ce32d79e1a5bc2efd7ccca0b94ac2a307b44. 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.