History of serve 4 changes

In src/cli/sync.rs, lines 720–748 on 795b8b502dedd45bc3959c80eec48b43082faf9596e1133f71df0b70724abf1f. 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 720,748:src/cli/sync.rs.