History of release 3 changes

In crates/oh/src/main.rs, lines 2012–2103 on f87a74fffc8715b03636a4f59ff2a5ec4fe564a9f9c7521a03a1bfaf5fa04773. 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 2012,2103:crates/oh/src/main.rs.