History of dispatch 2 changes

In crates/hub/src/protocol.rs, lines 238–256 on fe0bb950a3001d359baa188807240b044fd3f15b6888fd563108bfe216fa588e. 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.