History of proposal 3 changes

In crates/oh/src/main.rs, lines 492–574 on 749d9a5fcd9f7c7bf40e2244f7186555ea327eb9b0993cfd7d80f8950eef35a5. 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 492,574:crates/oh/src/main.rs.