- Better customization of the TOTP algorithm. Currently everything is just Google Authenticator's defaults.
 - Display is awful to code an open ended interface for, but I still should
 - Error reporting should be enhanced, either through a messaging object or via `throw`
 - The hash fed into the `_6238` object should be based on the hash referenced in the provisioning uri
 - URI tests must be rewritten due to public/private changes in the Otpauth object