Merge i10git.cs.fau.de:pycodegen/pystencils into version_number

.gitignore

.gitlab-ci.yml

doc/conf.py

doc/notebooks/01_tutorial_getting_started.ipynb

doc/notebooks/03_tutorial_datahandling.ipynb

doc/notebooks/04_tutorial_advection_diffusion.ipynb

doc/sphinx/pystencils.bib

pystencils/astnodes.py

pystencils/backends/arm_instruction_sets.py

pystencils/backends/cbackend.py

pystencils/backends/dot.py

pystencils/backends/simd_instruction_sets.py

pystencils/backends/x86_instruction_sets.py

pystencils/cpu/kernelcreation.py

pystencils/cpu/vectorization.py

pystencils/datahandling/blockiteration.py

pystencils/datahandling/parallel_datahandling.py

pystencils/datahandling/serial_datahandling.py

pystencils/fd/spatial.py

pystencils/field.py