Release 0.1.0-alpha.2.1
A small update on the same day: the Updates page, as the three appliances were updated to 0.1.0-alpha.2 from it. An appliance installed from a test branch is offered the release, a reboot is asked for only when the driver changed, and the changes are listed with their links. Every step of an update is photographed in the guide, docs/guide/updating.md.