Merge branch 'enable-cobertura-reports' into 'master'

Enable cobertura reports back to GitLab CI

Closes #11

See merge request !9

auto-devops/tox-tests.yml

@@ -158,6 +158,7 @@ test:
       - ./artefacts/
     reports:
       junit: ./artefacts/**/junit.xml
+      cobertura: ./artefacts/coverage.xml
 
   # Look for the summary line output from coverage's text report. The
   # parentheses are used to indicate which portion of the report contains the