Diagram Editor

The markdown editor has a new Insert Diagram button that uses [draw.io](https://app.diagrams.net/) to create and edit complex diagrams.

Your diagrams are stored inside the page itself, so no need to worry about uploading files.

Code Folding

The markdown editor also has a few enhancements to make editing a bit easier. Section Folding lets you collapse big blocks of text to get them out of your way. Folded sections look like this:

And here's what's being hidden:

Tab Set Previews

Tab sets now show a styled preview instead of unstyled text: