added almost_equals method to the Composition class
bugfix to symmetry finder to work when no spacegroup is found and returns (0)
with no spacegroup name
Update Composition.nearly_equals to work when one composition has a value set to
0
add an option to filter for duplicates in the substitution predictor
Merge branch 'master' of github.com:materialsproject/pymatgen
Add a get_crystal_field_spin method that supports calculating the Crystal Field
Spin of a given specie, oct or tet env and high/low.
Minor code simplification.
Move crystal field code to Specie, where it is more generally useful.
Fix import in unittest.
Cleanup structure predictor.
More cleanup.
Fix potcar generatino script for Osmium.
Add StructureNotationalLangauge to pymatgen.
Fix package doc.
Fix eq implementation.
Fix requirements and setup.py.
Use StringIO instead of temp file for reference checking.
Simplify bibtex checking further.
Minor doc fixes.
More doc changes.