Merge branch 'api-fixes' into 'master'

.flake8

.pre-commit-config.yaml

LICENSE

bob/__init__.py

bob/learn/__init__.py

bob/learn/em/__init__.py

bob/learn/em/cluster/__init__.py

bob/learn/em/gmm.py

bob/learn/em/k_means.py

bob/learn/em/linear/__init__.py

bob/learn/em/linear_scoring.py

bob/learn/em/mixture/__init__.py

bob/learn/em/test/test_gmm.py

bob/learn/em/test/test_kmeans.py

bob/learn/em/test/test_linear.py

bob/learn/em/test/test_linearscoring.py

bob/learn/em/test/test_picklability.py

bob/learn/em/wccn.py

bob/learn/em/whitening.py

buildout.cfg