Update What's New page to reflect v0.13 and move v0.12.x info to changelog
Docs: mention more available backports of stdlib packages
Fixed meta class for Python 3 form.
Merge pull request #90 from timster/patch-1

Fixed meta class for Python 3 form.
Update cheatsheet notebook
Update Py2/3 compatibility cheat-sheet
Add a script to enable colour in HTML produced from IPython notebooks
Add PDF link to compatibility cheatsheet notebook
Fix for absent exception raise in Python3
Fix futurize -p and futurize -W.
Fix for issues #91 and #96: newobject breaks multiple inheritance in v0.13

Also add related tests (currently failing) for multiple inheritance from other future types
Remove BaseNewObject as a base class for other metaclass bases of future types.

It may be safer to remove BaseNewObject until we're sure it's needed because it
adds an extra layer of complexity.

However, this doesn't fix the tests introduced in f905bd for multiple
inheritance with other future types than ``newobject``; these still give a
``metaclass error``. So we mark the new tests as still failing.
Merge pull request #92 from 9seconds/fix_for_raise_py3

Fix for absent exception raise in Python3
Merge pull request #95 from QuLogic/futurize-option-fix

Fix futurize -p and futurize -W.
Merge branch 'v0.13.x' of https://github.com/PythonCharmers/python-future into v0.13.x
Docs: Add link to older version history from What's New page (issue #93)
Possible fix for issue #94: revert a v0.12-vintage change to fix_future_standard_library
corrected wrong formatted code block
Cheatsheet: add link to video of PyCon AU talk
Merge branch 'v0.13.x' of https://github.com/PythonCharmers/python-future into v0.13.x