History of finish 3 changes

In crates/oxy-strata/src/aws.rs, lines 191–220 on b0621c2f8cc4e8ec87ce68b61be887253e92f15a66743d98450e039b2183996b. 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.