History of HubBackend::new 2 changes

In crates/hub/src/protocol.rs, lines 40–42 on c98935537c57e7c0593190befffff62863149107aaae01388498c3ee82614157. 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 40,42:crates/hub/src/protocol.rs.