重写了节点的view、viewmodel关系，实现了对画布元素的选取功能，重构了底层依赖，添加了对net .Framework4.6.1以上的Framework类库支持

Library.Framework/Http/ControllerBase.cs

@@ -0,0 +1,19 @@
+using System;
+
+namespace Serein.Library.Framework.Http
+{
+    public class ControllerBase
+    {
+
+        public string Url { get; set; }
+
+        public string BobyData { get; set; }
+
+        public string GetLog(Exception ex)
+        {
+            return "Url : " + Url + Environment.NewLine +
+                   "Ex : " + ex.Message + Environment.NewLine +
+                   "Data : " + BobyData + Environment.NewLine;
+        }
+    }
+}