Merge branch 'py3' of https://github.com/ogrisel/scikit-learn into py3
Merge branch 'py3' of https://github.com/ogrisel/scikit-learn into py3
PY3: used six.iteritems to fix dict iteritems in module pipeline.py
Merge branch 'py3' of https://github.com/ogrisel/scikit-learn into py3