Moved tests one layer up and out of package (same as package and docs)!

setup.cfg

tests/test_analytic.py

tests/test_analytic/ref_phase_disc.npy

tests/test_analytic/ref_phase_slab.npy

tests/test_analytic/ref_phase_sphere.npy

tests/test_analytic/ref_phase_vort.npy

tests/test_costfunction.py

tests/test_costfunction/hess_ref.npy

tests/test_costfunction/jac_ref.npy

tests/test_costfunction/jac_vec_ref.npy

tests/test_costfunction/phasemap_ref.hdf5

tests/test_costfunction/zero_vec_cost.npy

tests/test_dataset.py

tests/test_dataset/phase_vec_ref.npy

tests/test_fielddata.py

tests/test_fielddata/magdata_flipx.hdf5

tests/test_fielddata/magdata_flipy.hdf5

tests/test_fielddata/magdata_flipz.hdf5

tests/test_fielddata/magdata_orig.hdf5

tests/test_fielddata/magdata_ref_load.hdf5