History of Pool::keep 1 change

In crates/flow/src/cache.rs, lines 114–128 on d65cad6bdeb502f045d82a94a4c41688bed3136a22f2d5b315b6a07005f2e81d. 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 114,128:crates/flow/src/cache.rs.