History of CloudStore::drop 1 change

In crates/oxy-strata/src/lib.rs, lines 518–522 on ef7d4ea6f33bb293f6624b63952d17400c9a42e9c4def93de17a676b7b65c45e. 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.