History of project 3 changes

In crates/oh/src/main.rs, lines 1309–1423 on d943160dafebcfb7757992bb2192edcb22a4371165b7fe67c4c78e4b10df7e5d. 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.