History of project 6 changes

In crates/oh/src/main.rs, lines 1893–2059 on d7e2c27548078f2ce2a76373feabfe92c097ba0cedb6d6ed76a0e1f4d204f57a. 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.