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   Licensed under the Apache License, Version 2.0 (the "License");

*   `tf.vectorized_map`:

    *   Added an optional parameter: `warn`. This parameter controls whether or
        not warnings will be printed when operations in the provided `fn` fall
        back to a while loop.

*   XLA:

    *   `tf.distribute.MultiWorkerMirroredStrategy` is now compilable with XLA.