With Rack v2 officially out, I am slowly starting to write details about the Cardinal project.

There is now a proper readme, license page (still need to write about artwork and CC), project overview page, and rack pro vs cardinal differences page.

It is still a very much work-in-progress, with some details not yet defined and things to implement... but already works for quite a lot of things.

In any case, I am happy with the readme as entry point.
https://github.com/DISTRHO/Cardinal

Opinions welcome!