History of reaper 4 changes

In crates/hub/src/flow.rs, lines 2905–2920 on v0.9.15. 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 2905,2920:crates/hub/src/flow.rs.