History of project 3 changes

In crates/oh/src/main.rs, lines 1309–1423 on 58cbf42447bc0677932c1882ab0f2935be41175e51405f4b3d641cba95f0ab56. 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 1309,1423:crates/oh/src/main.rs.