History of schemas 4 changes

In crates/hub-api/src/lib.rs, lines 635–687 on decb6304ba97d099bb007c13337e50d522570d2a5074485f5321b486359642e8. 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.