History of serve 4 changes

In src/cli/sync.rs, lines 720–748 on c0d4075cadc08ad8f82059238de1df8c82df07c5431aa1d99335d80fb1357e65. 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.