*   If you're opening empty variable scopes; replace `variable_scope('', ...)`
    by `variable_scope(tf.get_variable_scope(), ...)`.
*   Headers used for building custom ops have been moved from
    site-packages/external into site-packages/tensorflow/include/external.

## Bug Fixes and Other Changes

*   `tfe.Network` is deprecated. Please inherit from `tf.keras.Model`.