*   The `TextVectorization` layer now accounts for the mask_token as part of
        the vocabulary size when output_mode='int'. This means that, if you have
        a max_tokens value of 5000, your output will have 5000 unique values
        (not 5001 as before).
    *   Change the return value of `TextVectorization.get_vocabulary()` from
        `byte` to `string`. Users who previously were calling 'decode' on the