History of project 6 changes

In crates/oh/src/main.rs, lines 1893–2059 on 5caa65fd51e70be4b6320a97bb81662d8607a96797ea4dd3cd7e5ba4732702e5. 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 1893,2059:crates/oh/src/main.rs.