Moved UseThisCall to Config

Facepunch.Steamworks/Client.cs

@@ -198,11 +198,5 @@ internal Action InstallCallback( int type, Delegate action )
             //return () => Valve.Steamworks.SteamAPI.UnregisterCallback( ptr );
             return null;
         }
-
-        /// <summary>
-        /// Some platforms allow/need CallingConvention.ThisCall. If you're crashing with argument null
-        /// errors on certain platforms, try flipping this to true.
-        /// </summary>
-        public bool UseThisCall { get; set; }
     }
 }

Facepunch.Steamworks/Config.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Facepunch.Steamworks
+{
+    public static class Config
+    {
+        /// <summary>
+        /// Some platforms allow/need CallingConvention.ThisCall. If you're crashing with argument null
+        /// errors on certain platforms, try flipping this to true.
+        /// 
+        /// I owe this logic to Riley Labrecque's hard work on Steamworks.net - I don't have the knowledge
+        /// or patience to find this shit on my own, so massive thanks to him. And also massive thanks to him
+        /// for releasing his shit open source under the MIT license so we can all learn and iterate.
+        /// 
+        /// </summary>
+        public static bool UseThisCall { get; set; }
+    }
+}