Twitter has a "messages" tab that would be very useful on halcyon imo.
No problem,I think that can be done quite easy.
Version 2.0.1 will only contain bugfixes but maybe I can do it in 2.0.2.
In https://halcyon.anoxinon.de/ labeled as V2.1, I don't see a letter symbol or a messages timeline
There wasn't enough space left in the top navigation so I put it to the profile dropdown.
Click on your avatar in the header nav and then you'll find the "Direct" link with a email icon in front of it.