Merge branch 'flake8-during-ci' into 'master'

.gitlab-ci.yml

loopy/__init__.py

loopy/kernel/__init__.py

loopy/kernel/creation.py

loopy/kernel/data.py

loopy/kernel/instruction.py

loopy/schedule/__init__.py

loopy/target/python.py

loopy/transform/data.py

loopy/transform/padding.py

setup.cfg

test/gnuma_loopy_transforms.py

test/library_for_test.py

test/test_domain.py

test/test_from_loopy_import_star.py

test/test_numa_diff.py