History of issue 4 changes

In crates/oh/src/main.rs, lines 1302–1409 on 3d086bc3d69bce9d301a29144eda53851f72a366fe3693b7fc7a418bd1f95137. 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 1302,1409:crates/oh/src/main.rs.