Merge branch 'rangersbach/reductions' of i10git.cs.fau.de:pycodegen/pystencils...

Merge branch 'rangersbach/reductions' of i10git.cs.fau.de:pycodegen/pystencils into rangersbach/reductions

# Conflicts:
#	src/pystencils/backend/kernelcreation/freeze.py