History of issue 3 changes

In crates/oh/src/main.rs, lines 577–677 on a024e800af4ef944dad7c3b22853686c9006caec86e0606236118fb03a702942. 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.