- Added pre-commit checks
- Dropped old dependencies
- Brought all classes and functions to bob.learn.em
- Make KMeans.centroids_ available as KMeans.means
- Implement a load method for GMMMachine

This fixes import issues when it is packaged in conda.

Replaced mStep with more pythonic m_step; replaces m_step1 with m_step_v (and accordingly) to be more precise

Conflicts:
	setup.py

Generated Library containing the C++ code; Removed dependency on Bob; Added bindings for bob.io.base.HDF5File interfaces; WARNING: EMPCA is not working yet.