History of proposal 8 changes

In crates/oh/src/main.rs, lines 1253–1408 on ecac6e8d9b418b87593f8c58c1e36449c8f9fae5fb68a5e4d08e9bb1f8e6e6ab. 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 1253,1408:crates/oh/src/main.rs.