Merge branch 'optimization' into 'master'

examples/create_cascade_mesh.ipynb

examples/read_profilepoints.ipynb

ntrfc/cascade_case/domain.py

ntrfc/cascade_case/utils/domain_utils.py

ntrfc/data/turbine_cascade/profilepoints.txt

ntrfc/data/turbine_cascade_2/profilepoints.txt

ntrfc/geometry/alphashape.py

ntrfc/gmsh/turbo_cascade.py

ntrfc/math/methods.py

tests/cascadecase/domain/test_ntrfc_domaingen_cascade.py

tests/geometry/test_ntrfc_alphashape.py

tests/gmsh/test_meshing.py

tests/timeseries/test_ntrfc_stationarity.py

tests/turbo/test_ntrfc_domaingen_cascade.py