History of dispatch 2 changes

In crates/hub/src/protocol.rs, lines 238–256 on e271a37b629a7c18c4409e2e7333342b2f189316e2da1fdf7c2db6aec818472c. 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 238,256:crates/hub/src/protocol.rs.