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
Bug fixes
Merge branch 'master' of https://github.com/mbkumar/pymatgen
Merge branch 'master' of github.com:materialsproject/pymatgen
 Add char2l function to convert chars (s, p, d...) into integers
Merge remote-tracking branch 'mpmaster/master'

Conflicts:
	setup.py
Overhaul of anonymous structure matching
minimize square of electronegativity difference in StructureMatcher
set default temperature value of 800
fix variable name bug
Merge remote-tracking branch 'mpmaster/master'
 Minor changes in GBRV workflows
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
 Fix typos