Would be great to have `RandomState`'s [`permutation`]( https://docs.scipy.org/doc/numpy/reference/generated/numpy.random.RandomState.permutation.html#numpy.random.RandomState.permutation ) and [`shuffle`]( https://docs.scipy.org/doc/numpy/reference/generated/numpy.random.RandomState.shuffle.html#numpy.random.RandomState.shuffle ) for Dask Arrays.