Use session for MPRester.
Pool api key query.
Update dev docs.
Supprot for with context manager in MPRester.
Merge branch 'master' of github.com:materialsproject/pymatgen
Doc updates.
Fix doc in Charge balanced filter.
Anonymous fitting for StructureMatcher.
More unittests for anonymous fitting.
Remove useless import.
add a getter for wigner seitz cell and brillouin zone in lattice
add an option to get standard and conventional cell from aconvasp
conventional and standard cell according to the symmetry found by SymmetryFinder
Merge branch 'master' of github.com:materialsproject/pymatgen

Conflicts:
	pymatgen/core/lattice.py
Fix doc.
unitests for winger seitz, and standard conventional cells
Merge branch 'master' of github.com:materialsproject/pymatgen
Simplify wigner-seitz code.
Minor mods to plotting utils.
Fix issues with electronic configuration in Ru, Rh and Tc.