History of dispatch 2 changes

In crates/hub/src/protocol.rs, lines 238–256 on 65be9f9c3074c724caeeb1e398643a1ee538441f7a91742aaaa1baad55a27bb4. 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.