Fix: shift_slice to accept single slices as argument, and return tuples

See merge request !177

Frederik Hennig authored 4 years ago and Markus Holzer committed 4 years ago

- `shift_slice` did not work for single slices as it always tried to
iterate its argument
- `shift_slice` returned lists of slices, but for accessing numpy
arrays, tuples of slices are required

Fix: Replaced accidental `continue` by `break` in boundaries/createindexlist.py

See merge request !169

Update pystencils integration pipeline

See merge request !173

count_operations: fix to not count integer expressions for addresses/constants as real operations

See merge request !171

Warning fixes in setup.py

See merge request !172

Fix #23: Make Field.Access NotIterable

Closes #23

See merge request !166

Make work on SymPy 1.7: sympy.printing.ccode -> sympy.printing.cxx

See merge request !170

There's also sympy.printing.c but we are always compiling as C++.

Extend testsuite

See merge request !168

Update conftest and readme

See merge request !167