History of b64url 1 change

In crates/hub/src/oidc.rs, lines 188–198 on 36e5a9c15a841b3c83b70fa1077f2cc00a562d01776f24d6c824a2da019de3ff. 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.