History of proposal 6 changes

In crates/oh/src/main.rs, lines 919–1056 on 7e01a7665aa589228faa3fd84db2132fe93108f5d786169fbab6c312ec50dbd5. 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.