History of proposal 10 changes

In crates/oh/src/main.rs, lines 1500–1666 on 27322cd2755afbd1d64cd5554c81fa2ebfe3f664190fdf7543445f00ce89754c. 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 1500,1666:crates/oh/src/main.rs.