History of milestone 2 changes

In crates/oh/src/main.rs, lines 2570–2619 on 64e5964e9f132a1a209dd85292a1671d9324cd5cc3786d094ab12d18c9377f1e. 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 2570,2619:crates/oh/src/main.rs.