Pymatgen

* Input sets for GW and BSE calculations (Zhenbin Wang) and grain boundary
calculations (Hui Zheng). Input sets now support overriding of POTCAR
settings.
* Haven ratio calculation (Iek-Heng Chu).
* LAMMPS io updates (Kiran Matthews).
* Oxidation state guessing algorithms based on ICSD data (Anubhav Jain).
* New local_env module for local environment analysis. (Nils Zimmerman).
* pymatgen.util.plotting.periodic_table_heatmap (Iek-Heng Chu).
* Improvements to surface code for tasker 3 to 2 reconstructions.
* pymatgen.analysis.interface_reactions.py for analyzing interfacial reactions
(Yihan Xiao).

* PointGroupAnalyzer now allows for symmetrization of molecules. (mcocdawc)
* QuasiharmonicDebyeApprox with anharmonic contribution. (Brandon)
* Improvements to LAMMPS io. (Kiran)
* Misc bug fixes.

* Fixes and minor improvements to elastic, bader and defect analyses.

* Major refactoring and improvements to lammps io. (Kiran)
* Major improvements to BaderAnalysis. (Joey and Zhi)
* Major improvements to Magmom support in cifs, SOC calculations, etc.
(Matthew Horton)
* Add remove_site_property function. Add magmom for Eu3+ and Eu2+.
* BoltztrapAnalyzer/Plotter support for seebeck effective mass and complexity
factor (fraricci)

* Misc bug fixes to elastic (J. Montaya),
* Decrease default symprec in SpacegroupAnalyzer to 0.01, which should be
sufficiently flexible for a lot of non-DFT applications.

* Bug fixes for oxide corrections for MP queried entries, and pickling of Potcars.
* Default to LPEAD=T for LEPSILON=T.