History of finish 3 changes

In crates/oxy-strata/src/aws.rs, lines 191–220 on aded4110f0bd8b60dee14d0a67a7a16193e58ca1e124670960cf2b5f3d4989b3. 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 191,220:crates/oxy-strata/src/aws.rs.