1. Major update: MPRester now uses Materials API v2! Also major refactoring
   of MPRester.
2. Vastly improved Vasprun parser using cElementTree. Twice as fast,
   half as much code and easier to maintain.
3. Vast improvements to Qchem functionality (Xiaohui Qu).
4. Improved handling of Structure manipulations for extremely large
   structures (particularly in terms of memory consumption).
5. Bug fix for XYZ parsing for scientific notation.
6. Improve monty.serialization for transparent handling of JSON vs YAML.
   Requirements updated to monty>=0.3.3.
7. Update numpy requirements to 1.8+. Fixes memory leak.
8. Other minor bug fixes.