History of dispatch 2 changes

In crates/hub/src/protocol.rs, lines 252–270 on b66e70b7b6c751157888cfbba977bfd96c08598c6e70637774e679968375ffab. 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.