History of HubBackend::pusher 1 change

In crates/hub/src/protocol.rs, lines 81–89 on v0.6.0. 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 81,89:crates/hub/src/protocol.rs.