cosmetics and small tweaks

nifty4/domains/domain.py

nifty4/domains/structured_domain.py

nifty4/library/wiener_filter_energy.py

nifty4/minimization/conjugate_gradient.py

nifty4/minimization/gradient_norm_controller.py

nifty4/minimization/iteration_controller.py

nifty4/minimization/line_search.py

nifty4/minimization/line_search_strong_wolfe.py

nifty4/minimization/nonlinear_cg.py

nifty4/minimization/quadratic_energy.py

nifty4/minimization/relaxed_newton.py

nifty4/plotting/plot.py

setup.py

test/common.py

test/test_energies/test_power.py

test/test_field.py

test/test_minimization/test_minimizers.py

test/test_operators/test_smoothing_operator.py

test/test_spaces/test_interface.py