4.0.0-pre.10

Updated to support .NET Standard 2, .NET 7, .NET 8 (pre release).
Updated with support for retrieving user account info.
There is a breaking change. The authentication header is now set like this:

    using var httpClient = new HttpClient();
    httpClient.SetAuthenticationHeaderFromApiKey(yourApiKey);

and the methods that previously required an api key no longer require it.