Draft punk

The shiny new feature in this version is the ability to stage changes before publishing ✨.

A thing to be aware of is that when fetching documents in front-end(s), you'll now have to explicitly exclude draft documents by including the constraint !(_id in path 'drafts.**') in queries, or else you may end up with unpublished drafts in the result set. This is undoubtedly a little cumbersome and we're discussing how we can avoid this in the future.

Type sanity upgrade to get this version and don't hesitate to let us know if you experience any trouble.