Some fixes to fabfile.
Move spglib to Py3k support.
Minor formatting changes.
Update required pyhull version to 1.5, which is Py3k compatible.
Merge branch 'master' into pmg3
More Py3k compatibilities.
Add PMG3_NOTES as a todo list for future work.
More py3k fixes.
fix cStringIO usage.
More StringIO fixes.
More Py3k fixes.
~50% speedup to LinearAssignment code
Periodic Table and Composition are now py3k compatible.
Sites is now py3k compatible.
use np.linalg.inv to get reciprocal_lattice(faster)
Minor unittest fix.
coord_utils cleanup
minor changes to StructureMatcher
Merge branch 'master' of github.com:materialsproject/pymatgen

Conflicts:
	pymatgen/core/lattice.py
Fix units.