Merged master

doc/notebooks/02_tutorial_basic_kernels.ipynb

pystencils/cache.py

pystencils/cpu/vectorization.py

pystencils/simp/assignment_collection.py

pystencils/sympyextensions.py

pystencils_tests/test_aligned_array.py

pystencils_tests/test_field_access_poly.py

pystencils_tests/test_fvm.py

pystencils_tests/test_random.py

pystencils_tests/test_sharedmethodcache.py

pystencils_tests/test_sympyextensions.py

pystencils_tests/test_timeloop.py

pytest.ini

setup.py