There have been some instances where users are confused why the documentation in neovim.io doesn't work only to realize that they don't use nightly. I have a few ideas on how we could tackle this:

• Allow users to choose the version for the documentation. I think a good example of this is cmake (crazy, right?), where the documentation version is prominently shown at the top in an easy place.

• Use the latest stable in the documentation instead of nightly. This is probably easier to implement. A problem might be that nightly users might start complaining they can't find docs for nightly features.

Open to other suggestions.