History of dispatch 2 changes

In crates/hub/src/protocol.rs, lines 254–272 on 2bbe88a8586052df5c4a8b95725cbec3b70fed875e889918d7d5351f26a5369d. 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 254,272:crates/hub/src/protocol.rs.