I have been looking for this too, tried a lot already. Seems everything from the <a>-tag is stripped, apart from the href obviously.
Another thing I have been trying to solve is the use of anchors on a page. When writing long posts, or posts in multiple languages, it would be great to have some kind of jump-to menu at the top.
That is another good one, it would have really helped on the reference post I made. 😆
Another thing I worked on is fonts. The default one is terrible. There is an option to use unicode, looks a lot better, but... is not available on all mobile devices. All they see is rectangles :(
Are you using the Unicode char itself or the HTML entities? I believe that the entities ought to work, specifically the decimal version. Hexadecimal work too, but sometime they have issues when used within and around Divs.
That font looks 100x better! Right on, Let me know if you figure it out ;)