de-futurization, part 1

nifty5/compat.py

nifty5/dobj.py

nifty5/domain_tuple.py

nifty5/extra.py

nifty5/fft.py

nifty5/field.py

nifty5/linearization.py

nifty5/logger.py

nifty5/multi_domain.py

nifty5/multi_field.py

nifty5/plot.py

nifty5/probing.py

nifty5/sugar.py

nifty5/utilities.py