Switch to .NET 5 for Rhino v7

Clearly, migrating to .Net5 for Rhino 7 would be a bad, if not impossible, option right now. Sooner or later it will have to happen, though. My hope is that, by then, the Rhino/GH team will be overcome with an unfathomable urge to redesign the UI using .Net Maui, if you get my meaning…

You are assuming .NET maui is functional by then. Currently it doesn’t even compile and link according the discussion pages of the project. We already use the cross-platform library Eto

I was not aware Maui was that delayed, although it’s understood that .Net 5 is being released this November, but many important features will only see the light of day with LTS .Net 6 one year after. I hope that’s not the case with C#9 though, because it’s looking really good!