History of proposal 10 changes

In crates/oh/src/main.rs, lines 1619–1785 on 8f1d76f4169ab0ad61c184b6889680cfe0da3d6b626f1b29f58e1b33a7903319. 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 1619,1785:crates/oh/src/main.rs.