TensorBoard 1.6.0

NOTICE: TensorBoard 1.6.0+ has moved to the tensorboard package name on PyPI:
https://pypi.python.org/pypi/tensorboard. Only bugfix updates on 1.5.x will be
applied to the old package name (tensorflow-tensorboard). To upgrade to
TensorBoard 1.6.0+ we suggest you first pip uninstall tensorflow-tensorboard
before doing pip install tensorboard. See "Known Issues" below if you run into
problems using TensorBoard after upgrading.

The 1.6 minor series tracks TensorFlow 1.6.

Highlights

• (Beta) New Profile dashboard, which provides a suite of tools for inspecting
  TPU performance. See for details:
  https://github.com/tensorflow/tensorboard/tree/1.6/tensorboard/plugins/profile
• (Alpha) New Debugger dashboard, which provides a visual interface to tfdbg,
  the TensorFlow debugger. See for details:
  https://github.com/tensorflow/tensorboard/tree/1.6/tensorboard/plugins/debugger

Known issues

• Package tensorboard is installed but command and/or module are missing or
  have the wrong version - this may be due to conflicts with other packages that
  provide tensorboard scripts or modules. Please uninstall all such packages
  including tensorboard, tensorflow-tensorboard and tb-nightly and then
  reinstall tensorboard.
• Bazel 0.9.0+ required to build from source - this change was necessary in order
  to add support for building at Bazel 0.10.0 and above. Please update Bazel.