allow ~ to be used to specify vasp psp directory locations
Merge branch 'master' of github.com:materialsproject/pymatgen
Add editor method to strain a cell.
Beef up fit_anonymous of structure matcher to work with partial occupancies. So
now, you can map a partial occu to another partial occu, not just species.
Use func_tools total ordering. Beef up caching for Specie.
Fix unit tests.
Switch Site and Periodic Site to use Composition to represent species and
occupancy. This provides a lot more features, as well as enforcing the species
and occupancy to be immutable.
Fix unittests.
Minor style fixes.
Doc and code cleanup.
Massive cleanup.
Fix bug in Potcar from file.
Even more fix for Potcar.
More fixes for Potcar parsing.
Update distribute setup version.
Make vasp input sets obey MSONable framework.
fix aconvasp test for new sp_and_occu representation
v2.6.2 release.
Update doc.
Make it even more convenient to get atomic weight. Composition class now takes
simple strings as keys. E.g., you can do comp["Fe"] instead of having to convert
"Fe" to an element object.