Merge branch 'release_v1.2.0' into 'master'

Resolve "release v1.2.0"

Closes #211, #224, #226, #213, #229, #220, #107, #189, #231, #232, #235, #240, #241, #238, #242, #244, #245, #243, #237, and #257

See merge request toar/mlair!225