History of release 2 changes

In crates/oh/src/main.rs, lines 722–813 on ced6d3afc5cf135158603e2acf3c2fa8473f93488c5a9320df2e064d80db00a1. 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 722,813:crates/oh/src/main.rs.