History of Flow::allows 1 change

In crates/hub/src/config.rs, lines 123–129 on v0.5.2. 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 123,129:crates/hub/src/config.rs.