Use API token instead of username/pass for PyPi

Author: Anze

.gitlab-ci.yml

@@ -15,4 +15,4 @@ deploy to pypi:
     - sed -i "s/@@VERSION@@/$CI_COMMIT_TAG/g" ./setup.py
     - python setup.py sdist
     - python setup.py bdist_wheel
-    - twine upload -r pypi -u ${PYPI_USERNAME} -p ${PYPI_PASSWORD} dist/*
+    - twine upload -r pypi -u __token__ -p "${PYPI_TOKEN}" dist/*