NadekoBot.Extensions should now be fully annotated with nullable reference types as well as many classes from NadekoBot.Common

src/NadekoBot/Modules/Gambling/Connect4/Connect4.cs

@@ -1,4 +1,5 @@
-using CommandLine;
+#nullable disable
+using CommandLine;
 using System.Collections.Immutable;
 
 namespace NadekoBot.Modules.Gambling.Common.Connect4;
@@ -388,4 +389,4 @@ public sealed class Connect4Game : IDisposable
         [Option('b', "bet", Required = false, Default = 0, HelpText = "Amount you bet. Default 0.")]
         public int Bet { get; set; } = 0;
     }
-}
+}