History of release 2 changes

In crates/oh/src/main.rs, lines 1523–1614 on 97b18869acf56b26684db983c1feea231157a7a1f11c42b2098e71080c934344. 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 1523,1614:crates/oh/src/main.rs.