A small release with one or two features, and some bugfixes:

Colin Walters:
      main: Consistently set exit code as failure in option processing
      Error for unknown subcommands overrides unknown option
      Vagrantfile: Add a stub here
      compose: Introduce variable substitution for ${basearch}
      docs: Point compose server intro to CentOS
      docs: A few random tweaks; link to ostree and issues
      postprocess: Add `--add ostree` to dracut invocation

Giuseppe Scrivano:
      compose: support adding external files

Jonathan Lebon (1):
      daemon: add TaskBegin, TaskEnd, and PercentProgress

Git-EVTag-v0-SHA512: 88bf146d720ed2fc7626c00171cd77e3d2e3a21188a673efc0a6643e629585e640293336b9aceb9fba222cb2390ddc6bec46681ab6f7524eb9bba423d3641653