Merge branch '84-drop-korea' into '2.2-dev'

Resolve "Drop support for Mason Korea"

See merge request !47
2 jobs for 78-alert-overhaul in 1 minute and 25 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #6657
whats-open-py3.5

00:01:24

passed #6658
whats-open-py3.6

00:01:25