This allows easier testing of multiple versions of Python in a more automated fashion. This is needed if we're ever going to make some of the planned extensive refactorings. This change: * adds tox.ini * updates Makefile and .travis.yml to point to tox * fixes a doctest typo found while make sure the Makefile targets work * adds a [docs] extras_require so that the deps in tox are managed cleanly The pep8 target is currently commented out because it fails (and has done for a long time). Will fix asap. This commit is to ensure that travis is working. Followups will tune it up.
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