History of release 2 changes

In crates/oh/src/main.rs, lines 1498–1589 on e8fa53694f686d9df2fe4805e81ceec44b0b5c90b56ac9a9be16f3ce8fec14ee. 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 1498,1589:crates/oh/src/main.rs.