cleanup of BalancedReaction
Merge branch 'master' of github.com:materialsproject/pymatgen
Add ability to anonymously group structures
bugfix and nosetests for anonymous grouping in StructureMatcher
add flag to remove ions with net zero coefficient. Defaults to false for backwards compatibility
Add nosetest to test removal of spectator species
Change reaction instances to remove spectator species in the reaction. Prevents normalization errors in which the reaction is normalized by a specie with coefficient 0
Merge branch 'master' of https://github.com/mbkumar/pymatgen
Merge branch 'master' of github.com:materialsproject/pymatgen
Overhaul of anonymous structure matching
minimize square of electronegativity difference in StructureMatcher
set default temperature value of 800
fix variable name bug
Update monty requirements.
Merge branch 'master' of github.com:materialsproject/pymatgen
change method params
Revert "change method params"

This reverts commit 36f9fb10b68950ed962c09bd7d9628711ee3cc41.
Minor improvements and code formatting