History of proposal 10 changes

In crates/oh/src/main.rs, lines 1729–1895 on 0bc95135954de9e9011169e25ec4dcdfbf6b7746800ffa79d0b580e0f08f2d88. 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 1729,1895:crates/oh/src/main.rs.