History of schemas 4 changes

In crates/hub-api/src/lib.rs, lines 635–687 on ff656953017324d89ff345da2edecab2eec2f200d4f87bd01d485294f33b8b36. 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 635,687:crates/hub-api/src/lib.rs.