*   Add support for 3d convolutions and pooling.
*   Update gRPC release to 0.14.
*   Eigen version upgrade.
*   Switch to eigen thread pool
*   `tf.nn.moments()` now accepts a `shift` argument. Shifting by a good
    estimate of the mean improves numerical stability. Also changes the behavior
    of the `shift` argument to `tf.nn.sufficient_statistics()`.
*   Performance improvements
*   Many bugfixes

# Linux builds. Instructions are available in the official documentation:
# https://www.tensorflow.org/install/source#install_clang_recommended_linux_only
# Another good option is to use our Docker containers to build and test TF:
# https://github.com/tensorflow/tensorflow/tree/master/tensorflow/tools/tf_sig_build_dockerfiles.
build:unsupported_cpu_linux --config=avx_linux