fixes

nifty/data_objects/distributed_do.py

nifty/data_objects/my_own_do.py

nifty/data_objects/numpy_do.py

nifty/dobj.py

nifty/field.py

nifty/operators/fft_operator_support.py

nifty/operators/power_projection_operator.py

nifty/spaces/lm_space.py

nifty/spaces/power_space.py

test/test_field.py

test/test_operators/test_smoothing_operator.py

test/test_spaces/test_power_space.py