History of b64url 1 change

In crates/hub/src/oidc.rs, lines 188–198 on 7829b7c7bb59af96323959718722bbba411100c09f667e3bc3ce85110d822c18. 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.