added runtime patcher, added MemoryUtils, fixes

WeModPatcher/ReactiveUICore/ObservableObject.cs

@@ -0,0 +1,20 @@
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace WeModPatcher.ReactiveUICore
+{
+    public class ObservableObject : INotifyPropertyChanged
+    {
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        protected void OnPropertyChanged([CallerMemberName] string name = null) => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(name));
+
+        protected virtual bool SetProperty<T>(ref T field, T value, [CallerMemberName] string propertyName = null)
+        {
+            if (Equals(field, value)) return false;
+            field = value;
+            OnPropertyChanged(propertyName);
+            return true;
+        }
+    }
+}