*   Improve implicit broadcasting lowering.
*   Improving stability of GCS/BigQuery clients by a faster retrying of stale
    transmissions.
*   Remove OpKernelConstruction::op_def() as part of minimizing proto
    dependencies.
*   VectorLaplaceDiag distribution added.
*   Android demo no longer requires libtensorflow_demo.so to run
    (libtensorflow_inference.so still required)