sphinx documentation for nbackend

doc/index.rst

doc/sphinx/nbackend/arrays.rst

doc/sphinx/nbackend/ast.rst

doc/sphinx/nbackend/expressions.rst

doc/sphinx/nbackend/index.rst

doc/sphinx/nbackend/kernelcreation.rst

doc/sphinx/nbackend/rationale.rst

doc/sphinx/nbackend/type_system.rst

src/pystencils/nbackend/arrays.py

src/pystencils/nbackend/functions.py

src/pystencils/nbackend/kernelcreation/__init__.py

src/pystencils/nbackend/kernelcreation/kernelcreation.py

src/pystencils/nbackend/typed_expressions.py

src/pystencils/nbackend/types/basic_types.py

src/pystencils/nbackend/types/quick.py