History of hub 3 changes

In crates/hub/tests/flow.rs, lines 40–55 on 3ff52534f69b33516f451f62e6e48260d233489b84aa92d9309400979016c155. 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 40,55:crates/hub/tests/flow.rs.