nifty2go -> nifty4 part 1/n

README.md

demos/critical_filtering.py

demos/log_normal_wiener_filter.py

demos/nonlinear_critical_filter.py

demos/paper_demos/cartesian_wiener_filter.py

demos/paper_demos/wiener_filter.py

demos/probing.py

demos/wiener_filter_easy.py

demos/wiener_filter_via_curvature.py

demos/wiener_filter_via_hamiltonian.py

docs/source/conf.py

nifty4/__init__.py

nifty4/data_objects/__init__.py

nifty4/data_objects/distributed_do.py

nifty4/data_objects/numpy_do.py

nifty4/data_objects/random.py

nifty4/dobj.py

nifty4/domain_object.py

nifty4/domain_tuple.py

nifty4/field.py