History of finish 4 changes

In crates/hub/src/flow.rs, lines 388–444 on edcef27575a73e6acece529d1c0d3bb9f3509123de1a2c049ef4c0dd28b38bba. 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.