https://github.com/projectatomic/atomic-host-docs/blob/f345e46222961eca0d30a63e67ef7b4b097b02e9/outline.txt#L56 Reference: - https://github.com/projectatomic/atomic-site/blob/master/source/docs/os-updates.md - https://github.com/projectatomic/atomic-host-docs/blob/master/attic/atomic-guide/installation_and_configuration_guide/content/upgrading_and_downgrading.adoc - https://fedoraproject.org/wiki/Atomic_Host_upgrade
