Yggdrassil is only a personal project, with no intension for serious distribution. Don't expect more from it than I strictly need for my own. If you think you have a use for it, well then you may use it under the terms of the GPL 3.
Since I am to quit .NET completely, I will also have to quit all my C# projects. Some of them will be converted to C++, others may be completely rewritten from scratch (which is likely to happen with Yggdrassil, since I still need that tool). Whatever will happen to the new Yggdrassil, this repository will not be closed, and a new repository (likely with the same name) will soon be opened once the rewrite of Yggdrassil has truly begun.