* Added CHANGELOG.md, using the keepachangelog.com template

* Added initial GitLab CI pipeline
4 jobs for master in 3 minutes and 23 seconds (queued for 12 minutes and 24 seconds)
Status Job ID Name Coverage
  Test
passed #6
build

00:02:52

passed #7
test

00:00:30

canceled #4
build

canceled #5
test