History of certify 3 changes

In crates/hub/src/keyless.rs, lines 160–227 on v0.6.1. 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 160,227:crates/hub/src/keyless.rs.