Merge remote-tracking branch 'upstream/master'

.gitlab-ci.yml

bin/loopy

build-helpers/loopy.spec

build-helpers/make-linux-build-docker.sh

doc/reference.rst

doc/tutorial.rst

examples/fortran/run-floopy.sh

examples/fortran/run-loopy.sh

loopy/__init__.py

loopy/auto_test.py

loopy/buffer.py

loopy/compiled.py

loopy/context_matching.py

loopy/frontend/fortran/translator.py

loopy/fusion.py

loopy/kernel/__init__.py

loopy/kernel/array.py

loopy/kernel/creation.py

loopy/kernel/data.py

loopy/kernel/tools.py