Ok, so now we have a wysiwyg-editor in drupal 8 core, but if you want another editor, like something used on medium.com?

I have done som intial work to get the medium clone inside drupal 8, and have now setup a sandbox on d.o and commited that to medium module. Please test it out if you are interested. The further plan of the module is to get a working media solution working with it, and if you are skilled on js (I am not :-)), and you feel you want to contribute... 

Sandbox is over here: https://www.drupal.org/sandbox/mikkex/2453725

Update: Drupal 8 version is now merged into medium project on d.o: https://www.drupal.org/project/medium