Strategy to use new preview version of .NET nanoFramework nugets

Hi @angularsen !

We now have (in preview) support for generics in nanoFramework.
Because this is still in preview, it would be nice to be able to have UnitsNet nuget previews using these to keep things separated and clear for developers.

Assuming you are OK with it, I wanted to discuss with you what would be the best approach for this.  Thank you.


