History of issue 4 changes

In crates/oh/src/main.rs, lines 785–892 on c92a99490cba0ace087f519730a310ee05b0c0b5fc540d91f7a4c7416eff5769. 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 785,892:crates/oh/src/main.rs.