add pypi upload, tagging 2.4.1

.gitlab-ci.yml

 image: registry.esss.lu.se/ics-docker/miniconda
 
+variables:
+  TWINE_REPOSITORY_URL: https://artifactory.esss.lu.se/artifactory/api/pypi/ics-pypi
+
 stages:
     - test
     - deploy
+
 check:
   stage: test
   image: registry.esss.lu.se/ics-docker/pre-commit
@@ -20,3 +24,16 @@ pages:
     - public
   only:
   - master
+
+release-pypi:
+  tags:
+    - docker
+  stage: deploy
+  image: python:3.7
+  before_script:
+    - pip install twine
+  script:
+    - python setup.py check sdist bdist_wheel
+    - twine upload dist/*
+  only:
+    - tags

ess/__init__.py

 __all__ = ["fieldmap", "installed", "lib_tw", "SP_Relativity", "TraceWin", "TTF"]
-__version__ = "2.4.0"
+__version__ = "2.4.1"
 from . import TraceWin
 from . import installed
 from . import lib_tw