History of certify 4 changes

In crates/hub/src/keyless.rs, lines 165–247 on 794ff94f194a4de38bbbd80498747a270cf8ced1f95e4decc09be5cff5fca18a. 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 165,247:crates/hub/src/keyless.rs.