History of finish 4 changes

In crates/hub/src/flow.rs, lines 388–444 on 6f52a041933125c8a632f5764914febd39673e506693f8e5881598546368cd57. 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 388,444:crates/hub/src/flow.rs.