Merge pull request #478 from gemini-hlsw/force-docker-manifest-ver

Force docker manifest version accepted by heroku

Release v0.14.9

Merge pull request #463 from gemini-hlsw/update/sbt-scoverage-2.4.2

Update sbt-scoverage to 2.4.2

Release v0.14.4

Merge pull request #444 from gemini-hlsw/scalajs-1.20.1

Update scalajs to 1.20.1