now fixed.

*   added DeterministicRandomTestTool to migration_utils.py. This is useful when
    you are migrating from TF 1.x to TF2 and need to make sure your computation
    is still happening correctly along the way. See the
    [validating correctness migration guide](https://www.tensorflow.org/guide/migrate/validate_correctness)
    for more info.

# Release 0.5.0