A bit of cleanup in the environment
Add tox configuration
We don't support 2.4 anymore.
No need for tuple comparisons.
Merge pull request #212 from DasIch/add-tox

Add tox configuration
Added .tox to .gitignore
Fixed a check that broke pypy
Merge pull request #213 from Lukasa/luk-sprint-branch

Sprint: Misc fixes.