History of proposal 6 changes

In crates/oh/src/main.rs, lines 919–1056 on 026a76d251ce302a7a2851dac1e4301c101948317f11876c3eae5f2942dc2844. 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 919,1056:crates/oh/src/main.rs.