Merge branch 'release-1.2.1' into 'master'

Final 1.2.1 changelog update

See merge request !189
3 jobs for 1.2 in 1 minute and 37 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #2825
docker linux amd64
build:linux:amd64

00:00:30

 
  Test
passed #2827
docker linux amd64
deckard:linux:amd64

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passed #2826
docker linux amd64
test:linux:amd64

00:00:31