Add project files.

Nodify/Containers/Events/PreviewLocationChanged.cs

@@ -0,0 +1,10 @@
+using System.Windows;
+
+namespace Nodify.Events
+{
+    /// <summary>
+    /// Delegate used to notify when an <see cref="ItemContainer"/> is previewing a new location.
+    /// </summary>
+    /// <param name="newLocation">The new location.</param>
+    public delegate void PreviewLocationChanged(Point newLocation);
+}