`contrib/session_bundle`.
*   Added a tf.contrib.image.rotate function for arbitrary angles.
*   Added `tf.contrib.framework.filter_variables` as a convenience function to
    filter lists of variables based on regular expressions.
*   `make_template()` takes an optional `custom_getter_ param`.
*   Added comment about how existing directories are handled by
    `recursive_create_dir`.
*   Added an op for QR factorizations.

# https://github.com/bazelbuild/bazel/issues/3360
build:linux --experimental_guard_against_concurrent_changes

# Configure short or long logs
build:short_logs --output_filter=DONT_MATCH_ANYTHING
build:verbose_logs --output_filter=

# Instruction set optimizations
# TODO(gunan): Create a feature in toolchains for avx/avx2 to
#   avoid having to define linux/win separately.
build:avx_linux --copt=-mavx