Add colors to flow.show_status()
Code cleanup
Merge remote-tracking branch 'trunk/master'
Update dev docs
Should use future print function if you import it !
Merge pull request #22 from yanikou19/master

Should use future print function if you import it !
Merge branch 'master' of https://github.com/gmatteo/pymatgen
Merge remote-tracking branch 'trunk/master'
Merge pull request #161 from gmatteo/master

print_function
Automatic Py3k merge for testing