github copilot and dlang

[Antonio]

Has someone tried github copilot (https://copilot.github.com/) 
with dlang? Access to the preview could be requested and, I 
think, main dlang team members could bypass the waitlist easily.

I suspect that the "low" volume of dlang code (used to train 
OpenAI) compared to other languages could impact in the support 
(if there is any).  Anyway, it could be really interesting to see 
how Copilot faces templates, traits, ...