History of schemas 4 changes

In crates/hub-api/src/lib.rs, lines 635–687 on a160b98fb922e084cc2a6a66684d804fd2d640f221a21fa9d60d7950fad51e63. 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.