Update to 0.4.0

Changelog:

• Publish compileIvyDeps as provided scope
• Added contrib modules to integrate Bloop, Flyway, Play Framework, Scoverage
• Allow configuration of GPG key names when publishing
• Bump Ammonite version to 1.6.7, making Requests-Scala available to use in your build.sc
• Support for Scala 2.13.0-RC2
• ScalaFmt support now uses the version specified in .scalafmt.conf

PR: 237993
Submitted by: Jens Grassel <freebsd-ports@jan0sch.de> (maintainer)
Sponsored by: Netzkommune GmbH