Nuget package is out of dated

[maxkatz6]

Open.Nat on nuget was last updated at 30.07.2016.
And .Net Standard support was added only in 2018, so we can't use this lib in .Net Core using NuGet package.

[lontivero]

Feel free to send a pull request for that, I will merge it asap.

[maxkatz6]

@lontivero how can I upload new version of Open.NAT to nuget with pull request?
Account holder should to rebuild package and upload it, as I understand.

[lontivero]

I will upload the package but I don't have time to create the package and test it.

[lontivero]

I will be creating a new package soon.