Merge pull request tensorflow#9351 from av8ramit/cherrypicks

TensorBoard Cherrypick

small change to format code (tensorflow#9223)

Merge pull request tensorflow#8958 from rohan100jain/branch_152141388

Branch 152141388

Update roadmap (tensorflow#8672)

Fixing 2 minor issues as suggested by Gunan.

Update release note.

Bump the version of nccl for macos fixes.

Improve upgrade script to handle list comprehensions as arguments. (t…

…ensorflow#7229)

python's ast module does not return the correct location, so we
have to do our best to scan backwards to find where the [ token
that trully started the list comprehension occurs.

Add 3.3 and 3.6 binary URLs to installation instruction. (tensorflow#…

…7085)

Update release notes for 1.0.0-alpha. (tensorflow#6747)

* Update release notes for 1.0.0-alpha.

* Add numpy compatibility to release notes.