- Testing is now done with Tox (just flake8 for now) on Python 2 and 3.

- Removed said task from the TODO list.
- Aliased setup test to tox.

README.rst

@@ -9,5 +9,4 @@ TODO
 - License.
 - Changelog.
 - README,
-- Testing with different Python versions with tox and flake8.
 - Specify number of versions to keep, dry-run option.

setup.cfg

 [bdist_wheel]
-# This flag says that the code is written to work on both Python 2 and Python
-# 3. If at all possible, it is good practice to do this. If you cannot, you
-# will need to generate wheels for each Python version that you support.
 universal=1
+
+[aliases]
+test=tox