Merge pull request #211 moved the tests/ directory from arrayfire.tests to the root, resulting in installation of a root-level python package called "tests". While pip will happily make this in your virtualenv, every sane package manager will complain. Most python coders consider it surprising and therefore bad design for "pip install mypackage" to create another top-level package other than "mypackage". It's even worse to make a top-level package with a common name like "tests", which just asks for conflicts. Please back this commit out.