History of project 3 changes

In crates/oh/src/main.rs, lines 1278–1392 on 40dd3f86379a920b8caa667001e63f08a0834286721ecc7ab8d486b3862103ff. 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 1278,1392:crates/oh/src/main.rs.