Cleanup & Fixes for .NET 5 (#309)

- [X] Fixes several bugs
- [X] Updates more ordinal issues
- [X] Cleans up the code a bit
- [X] Turns classes static that should have been
- [X] Changes TcpServer.Instances to a HashSet

Bumps release version

Projects/UOContent/Commands/ShardTime.cs

@@ -1,19 +1,19 @@
 using System;
+using System.Globalization;
 
 namespace Server.Commands
 {
-    public class ShardTime
+    public static class ShardTime
     {
         public static void Initialize()
         {
             CommandSystem.Register("Time", AccessLevel.Player, Time_OnCommand);
         }
 
-        [Usage("Time")]
-        [Description("Returns the server's local time.")]
+        [Usage("Time"), Description("Returns the server's local time.")]
         private static void Time_OnCommand(CommandEventArgs e)
         {
-            e.Mobile.SendMessage(DateTime.UtcNow.ToString());
+            e.Mobile.SendMessage(DateTime.UtcNow.ToString(CultureInfo.InvariantCulture));
         }
     }
 }