Merge branch 'cov' into 'master'

Update .gitlab-ci.yml for coverage

See merge request !17
4 jobs for master in 15 minutes and 9 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Install
passed #285497
install_py36

00:02:42

 
  Test
passed #285498
test_py36

00:05:04

31.0%
 
  Deploy
passed #285499
deploy_zenodo

00:04:59

 
  Test Container
passed #285500
test_deploy_from_container

00:02:23