• Added ToolsTreePackages= to add extra packages to the default tools
  tree.
• Added SystemdVersion= match to match on the host's systemd version
• Added Format= match to match on the configured output format
• Presets= can now be configured in global configuration files to select
  which presets to build
• UKIs can now be booted using direct linux boot.
• We don't try to make images UEFI bootable anymore on architectures
  that do not support UEFI
• Fixed --help to show all options again
• We now warn when settings are configured in the wrong section