Updated NuGet API key

[gsscoder]

As request. As in the subject.

[rmunn]

@moh-hassan @ericnewton76 I'd like to get #690 merged before a release happens, so that the Wiki documentation I'm working on for the new GetoptModeV2 parser mode will be correct, and so that the new Getopt parser mode from #684 will be selected by an enum rather than a boolean (which will allow for future feature expansion better than a boolean GetoptMode switch would).

[rmunn]

@ericnewton76 @moh-hassan Ping. Are you still getting notifications from this repo? I want to make sure #690 gets merged before the release, so that #684 is in the best shape it can be for 2.9.0. But since I'm not a maintainer, all I can do is keep pinging you until you respond. :-)

[DmitriyBobrovskiy]

@rmunn looks like this library is not maintained anymore, is it?

[rpavlik]

As a stop-gap measure, could packages be published to the GitHub Registry associated with this repo? https://docs.github.com/en/packages/working-with-a-github-packages-registry/working-with-the-nuget-registry

I can't figure out if there's an easy way to install from release assets otherwise.