`tf.debugging.is_inf`, `tf.debugging.is_nan`.
    *   New endpoints in `tf.dtypes` namespace: `tf.dtypes.as_string`.
    *   New endpoints in `tf.io` namespace: `tf.io.decode_base64`,
        `tf.io.decode_compressed`, `tf.io.decode_json_example`,
        `tf.io.decode_raw`, `tf.io.encode_base64`, `tf.io.matching_files`,
        `tf.io.parse_tensor`, `tf.io.read_file,`tf.io.write_file`.