fully interfaced shear_layer 2D Navier-Stokes example

examples/example_utils.py

examples/shear_layer/shear_layer.py

examples/taylor_green/TaylorGreen3D.py.old

examples/taylor_green/taylor_green.py

examples/taylor_green/taylor_green_multiscale.py

hysop/backend/device/opencl/opencl_array.py

hysop/backend/device/opencl/opencl_array_backend.py

hysop/fields/ghost_exchangers.py

hysop/operator/base/min_max.py

hysop/tools/numerics.py