Merge master

.gitlab-ci.yml

pystencils/backends/arm_instruction_sets.py

pystencils/backends/cbackend.py

pystencils/backends/simd_instruction_sets.py

pystencils/backends/x86_instruction_sets.py

pystencils/cpu/cpujit.py

pystencils/cpu/vectorization.py

pystencils/data_types.py

pystencils/fd/finitedifferences.py

pystencils/field.py

pystencils/include/aesni_rand.h

pystencils/include/myintrin.h

pystencils/include/philox_rand.h

pystencils/rng.py

pystencils/simp/assignment_collection.py

pystencils/transformations.py

pystencils_tests/test_basic_usage_llvm.ipynb

pystencils_tests/test_conditional_vec.py

pystencils_tests/test_dot_printer.ipynb

pystencils_tests/test_field_coordinates.py