Merge branch 'macos-ci' into 'master'

Added macOS CI test job

See merge request !16
2 jobs for master in 22 minutes and 24 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Test
passed #261792
macos_highsierra
test-macos

00:09:39

 
  Build
canceled #261793
build-latest

00:12:45