Cross file links!

Links to different files work great! There’s a small dialog to edit the link and whatnot and it’ll take you to the specified page!!

As much as I want to use wikilinks for this, that would require a custom plugin I don’t know how to make (I don’t even know if it’s really possible with MDXEditor). I’m gonna leave it at this for now, as the create link dialog works great for making them.

I had to make some pretty major changes to how selecting files works, however. If you look at the URL bar, it now shows the selected file in it. That is now what determines the selected file, which I’ve been meaning to do for a while and makes links infinitely easier.