Add stable_py3 with py3.4.1 test for circle.
No ASE with Py3k.
Merge branch 'pmg3' into stable_py3
Remove pypissh.
Merge branch 'master' into stable_py3
Merge branch 'master' into stable_py3
Upgrade setuptools on CircleCI.
Add pillow to cicle.
Merge branch 'master' into stable_py3

Conflicts:
	circle.yml
Merge branch 'master' into stable_py3
Merge branch 'master' into stable_py3
Rm py2.7 site packages.
Upgrade setuptools.
Merge branch 'master' into stable_py3
print_function
Make py.test happy
Merge branch 'master' into stable_py3
Refactor get_distance_and_image from PeriodicSite to Lattice. This allows the
Lattice method to get the distance and jimage between two arbitrary frac_coords
without creating a site (useful in a lot of instances).
Increment monty version. Move all decorators and lazy to monty.
Incorporate useful symmetry classes from nano106. WIP.