History of dispatch 2 changes

In crates/hub/src/protocol.rs, lines 252–270 on df940d75cd3d00ff196cc0c5b8fcf4fcf1e3db4b628738009abe4031bb7655c9. 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.