History of CloudStore::drop 1 change

In crates/oxy-strata/src/lib.rs, lines 518–522 on 7f617ee9b3addf9a4397443ce5fb7f6e85e1b26e43dc7baff170dced360c4185. 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 518,522:crates/oxy-strata/src/lib.rs.