History of schemas 4 changes

In crates/hub-api/src/lib.rs, lines 635–687 on c79a1111dd56a694829779446d7f0771d1a803390ac02618e0f01f511d139e1d. 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.