History of project 6 changes

In crates/oh/src/main.rs, lines 2199–2365 on 041a945f55f82634df6a9c5f2c75e604185da16f01eb5369b4a2b25b047b8956. 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 2199,2365:crates/oh/src/main.rs.