Improvements to the new API and docs

• 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

Fixes #35 (closed)

doc/plot/plot_ML.py

@@ -8,7 +8,7 @@ from matplotlib.patches import Ellipse
 
 import bob.db.iris
 
-from bob.learn.em.mixture import GMMMachine
+from bob.learn.em import GMMMachine
 
 logger = logging.getLogger("bob.learn.em")
 logger.setLevel("DEBUG")