History of issue 3 changes

In crates/oh/src/main.rs, lines 577–677 on d1727c573f3046f749229c9532ca56dd76ee4fda5cfb1877f771b4e3424ae992. 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 577,677:crates/oh/src/main.rs.