History of proposal 10 changes

In crates/oh/src/main.rs, lines 1738–1904 on f2d2776b2a14a2bb090bdb7a6a26debd0a86f6357c3ffdd8267a36207049fa9e. 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 1738,1904:crates/oh/src/main.rs.