History of dispatch 2 changes

In crates/hub/src/protocol.rs, lines 252–270 on 5533e91a2aa4e0b015aa3903b01dd0678175b99abe81002f0cc517e1159e3fa6. 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.