History of issue 4 changes

In crates/oh/src/main.rs, lines 1152–1259 on acb8d109e981553b233a60ad4df83f8f868e9ecb88214c56cd927d7f4944a1a4. 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 1152,1259:crates/oh/src/main.rs.