History of b64url 1 change

In crates/hub/src/oidc.rs, lines 188–198 on 4d2e44d79b03ab939a3b69c02fa7115265089c072018123c18fba764865fe298. 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 188,198:crates/hub/src/oidc.rs.