New Garbage Collector?

[aedt via Digitalmars-d]

In the forum, I saw a thread about someone working on a new GC. 
Just wanted to know if there's any updates on that. And what 
issues is it going to fix..

Personally, I would be greatly delighted if it acknowledges the 
Stop-The-World problem[1]. Going around it is shown not to be 
impossible[2]. I do understand it's not trivial task but how is 
the community/core devs supporting this?

[1] https://dlang.org/spec/garbage.html
[2] https://hub.docker.com/r/nimlang/nim/