History of dispatch 2 changes

In crates/hub/src/protocol.rs, lines 199–217 on 1553bfc9ae537a50984bff8b259f502f09e54e871e437e253869ea5e334b54f8. 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 199,217:crates/hub/src/protocol.rs.