Simultaneous WYSIWYG and Markdown editing

[tcr]

This has always been a stupid idea in the back of my head, that you could allow editing WYSIWYG and Markdown versions of the same file simultaneously. The inspiration comes from the CommonMark Dingus:

https://spec.commonmark.org/dingus/

In realtime, you can edit Markdown but also see the block in which your cursor currently is editing. This is true for converting it into a caret position, that you could represent the position of other editors in real time. But also, if you were to make edits in realtime, like bulleting items, the effect might not be too arduous for most normal edits. You can see that adding a backtick in an area may toggle the rest of the line, but not that it is a hinderance to other editors during the momentary style change.