I can take a pass at it design wise, but it'd be great to iterate on the revisions list component, so it provides more valuable context.

Specifically:

• Hide the user if site only has one author.
• Perhaps add granular timestamp.
• Present the author differently, without needing the sentence Changes saved by to be redundant in the list.
• Specify a little more input into what changed, without listing all changes; perhaps more at category level (Typography, Color, Layout, Block).

cc @apeatling