Removed duplicate author metadata
almost got email working again.
Added 'type' operator, still debugging correctness of query
Cleanup mgdb scritp.
MOre cleanup.
Fixed bug with existence constraints. Embraced their dual nature. Added markdown output format.
Merge remote-tracking branch 'origin/master'
Merge branch 'master' of github.com:materialsproject/pymatgen-db
documentation for mgvv. not linked into docs yet
v0.3.2 release.
Merge branch 'master' of github.com:materialsproject/pymatgen-db
Merge branch 'master' into plotting