bump version to 1.0.4.0, add WeModConfig model for backward compatibility, add feature to enable/disable automatic patch updates

WeModPatcher/Program.cs

@@ -2,6 +2,8 @@
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Diagnostics;
+using System.IO;
+using System.Reflection;
 using System.Threading.Tasks;
 using System.Windows.Forms;
 using Newtonsoft.Json;