History of issue 4 changes

In crates/oh/src/main.rs, lines 773–880 on f59e9680d880b1abc8c0b3ac7efb316c71d0001936e45fae4decc1f4a9829f47. 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 773,880:crates/oh/src/main.rs.