History of write 1 change

In crates/oxy-strata/tests/cloud.rs, lines 274–278 on identical-sides. 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 274,278:crates/oxy-strata/tests/cloud.rs.