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.
Cleanup.
More fixes.
formatting of finder.py
Merge branch 'master' of github.com:materialsproject/pymatgen

Conflicts:
	pymatgen/symmetry/finder.py
fix an issue with hexagonal vs rhombohedral lattice
Merge branch 'master' of github.com:materialsproject/pymatgen

Conflicts:
	pymatgen/symmetry/finder.py
add a unitest for the primitive standard structure and fix some issue in finder
Make cif reader more robust.
Remove ASE.
Remove ASE.