1. More utilities for working with Periodic Boundary Conditions. 2. Improved MPRester that supports more data and a new method of specifying the API key for heavy users via a MAPI_KEY environment variable. Please refer to the :doc:`usage pages </usage>`_ for more information. 3. Vastly improved POTCAR setup script in scripts directly that is now installed as part of a default pymatgen installation. 4. Miscellaneous bug fixes and speedups.