Merge branch 'ci/restrict-jobs' into 'master'

CI: Don't run CI tests on tags or master branch

See merge request !31

.gitlab-ci.yml

@@ -11,6 +11,9 @@ stages:
 
 test:linux:
   image: python:3.7
+  except:
+   - tags
+   - master@fsl/base
   script:
    - pip install pytest
    - pytest -v tests
@@ -20,6 +23,9 @@ test:linux:
 
 test:macos:
   image: python:3.7
+  except:
+   - tags
+   - master@fsl/base
   script:
    - pip install pytest
    - pytest -v tests