History of release 2 changes

In crates/oh/src/main.rs, lines 1523–1614 on 7e01a7665aa589228faa3fd84db2132fe93108f5d786169fbab6c312ec50dbd5. 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.