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/Api/IDynamicContext.cs

@@ -0,0 +1,13 @@
+using Serein.Library.Utils;
+using System;
+using System.Threading.Tasks;
+
+namespace Serein.Library.Api
+{
+    public interface IDynamicContext
+    {
+        NodeRunCts NodeRunCts { get; set; }
+        ISereinIoc SereinIoc { get; }
+        Task CreateTimingTask(Action action, int time = 100, int count = -1);
+    }
+}