Have statistics.utils.bincount return floating values by default
Have statistics.utils.bincount return floating values by default

When the returned ndarray's values were ints, it resulted in an
odd issue where 1 / Discrete => Discrete whereas
1. / Discrete => np.float64.

cheral/orange3,cheral/orange3,cheral/orange3,cheral/orange3,cheral/orange3,cheral/orange3