Tag v3.6.1

Tag v3.6.1rc1

Version bump for Python 3.5.3.

Version bump for Python 3.4.6.

Version bump for 3.5.3rc1.

Version bump for 3.4.6rc1.

Update docs and patchlevel for 3.6.0 final.

2.7.13 final bump

Version bump for 3.6.0rc2

Version bump for 3.6.0rc1