History of flow 6 changes

In crates/oh/src/main.rs, lines 1683–1782 on 8306eca4e4a3347a39de4baeaa83e7c7270fa356998bd66b6923b4338a5d2373. 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 1683,1782:crates/oh/src/main.rs.