History of HubBackend::new 2 changes

In crates/hub/src/protocol.rs, lines 42–44 on 3a01077da29aabb3ce6154e495f4d2064756cdef5094f011eb0da88e1fe60687. 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 42,44:crates/hub/src/protocol.rs.