History of propose 7 changes

In crates/hub/src/diffusion.rs, lines 685–813 on 8f0efa0729b02b703ca4caeb29ee53b6acd7c4e2e403f140617b26430d0e8570. 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 685,813:crates/hub/src/diffusion.rs.