History of HubBackend::new 3 changes

In crates/hub/src/protocol.rs, lines 44–52 on 71e65fcf95ab37246392ea0013ba4b53be8a9b804b5887bd555b5cecb10a41fa. 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.