Merge branch '31-naming-issue-in-h5-files' into 'master'

examples/flow_around_sphere/flow_around_sphere.py

examples/scalar_advection/levelset.py

examples/scalar_advection/turbulent_scalar_advection.py

hysop/backend/host/python/operator/flowrate_correction.py

hysop/backend/host/python/operator/penalization.py

hysop/backend/host/python/operator/vorticity_absorption.py

hysop/core/graph/computational_operator.py

hysop/fields/tests/test_cartesian.py

hysop/numerics/splitting/directional_splitting.py

hysop/numerics/splitting/strang.py

hysop/numerics/stencil/stencil.py

hysop/numerics/stencil/stencil_generator.py

hysop/operator/directional/directional.py

hysop/operator/flowrate_correction.py

hysop/operator/hdf_io.py

hysop/operator/penalization.py

hysop/operator/tests/test_absorption.py

hysop/operator/tests/test_bilevel_advection.py

hysop/operator/tests/test_custom_symbolic.py

hysop/operator/tests/test_diffusion.py