History of dispatch 2 changes

In crates/hub/src/protocol.rs, lines 252–270 on 967ef74f6fd9847b2d48a7a20b27bade903fe122f34d4eab7e48efb5242a0020. 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 252,270:crates/hub/src/protocol.rs.