History of Pool::key 1 change

In crates/flow/src/cache.rs, lines 84–97 on af8cf879d4fbe9b313cd8c9143d75a41cdc60dfb47db1f607c5df5ba918d3f8d. 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 84,97:crates/flow/src/cache.rs.