History of serve 4 changes

In crates/hub/src/lib.rs, lines 356–421 on 356183b71fab8ff2e99271c2f7ed872cfc084c89148f242ee00a92320139dddf. 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 356,421:crates/hub/src/lib.rs.