History of mib 2 changes

In crates/hub/src/flow.rs, lines 1690–1696 on 234921ea0834d3a9a813a644f8bcbb6327eb110431606dd668bee168b3b5d3d4. 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 1690,1696:crates/hub/src/flow.rs.