setup.py: drop pytest req

It is not needed in runtime at all.

Intel gpu fixes

See merge request !42

Out of order queue fixes

See merge request !43

Merge branch 'out-of-order-queue-fixes' of ssh://github.com/rebecca-palmer/pyopencl into out-of-order-queue-fixes

Merge branch 'out-of-order-queue-fixes' of ssh://gitlab.tiker.net/inducer/pyopencl into out-of-order-queue-fixes

(setitem, diff, if_positive, cumsum, all the reductions (sum/all/etc))

Try to fix Conda Apple build by forcing gcc instead of clang

See merge request !41

Work around removal of CL_MIGRATE_MEM_OBJECT_CONTENT_UNDEFINED_EXT

See merge request !40

# Conflicts:
#   .gitlab-ci.yml

Add a CI job for Python 3.7

See merge request !39

Back out Apple Conda workaround from !37

See merge request !38

CI with py36, try to fix Apple CI

See merge request !37