First commit.

Source/OpenNest.Core/Generic.cs

@@ -0,0 +1,12 @@
+namespace OpenNest
+{
+    public static class Generic
+    {
+        public static void Swap<T>(ref T a, ref T b)
+        {
+            T c = a;
+            a = b;
+            b = c;
+        }
+    }
+}