Improved: Added new class CliRunnableResult which derives from CliResult and adds Run and RunAsync methods
running the handler for the called command.
Changed return type of Cli.Parse and CliParser.Parse methods from CliResult to CliRunnableResult
So now you can do:

var result = Cli.Parse<RootCliCommand>();
return result.Run();

//or
var parser = Cli.GetParser<RootCliCommand>();
var result = parser.Parse(args);
return result.Run();     

Changed: Deprecated CliContext.IsEmptyCommand() and CliContext.IsEmpty(), use new properties
!CliContext.Result.HasArgs and !CliContext.Result.HasTokens instead.
These are better suited to be in CliResult and naming should better clarify the purpose.

Fixed: QualifiedSyntaxRewriter to support fully qualify generic name syntax like Array.Empty<CustomClass>().
Changed handling so that IdentifierNameSyntax anywhere is converted to fully qualified.

Fixed: Calling Cli.Ext.ConfigureServices will reset existing service provider if it was already built or set,
so that changed service collection can take effect:

var result = Cli.Parse<IStartupOptions>(args);
var startupOptions = result.Bind<IStartupOptions>();

//This works now, the existing service builder (caused by Cli.Parse) will be reset
Cli.Ext.ConfigureServices(services =>
{
    services.AddSingleton(startupOptions);
    services.AddSingleton<Dependency>();
});

await Cli.RunAsync<RootCommand>(args);