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.Core/DbSql/IRepositoryBase.cs

@@ -0,0 +1,19 @@
+using System.Linq.Expressions;
+
+namespace Serein.DbSql
+{
+    public interface IRepositoryBase<TEntity> where TEntity : class, new()
+    {
+        TEntity GetModelByID(dynamic ID);
+
+        int Add(TEntity Model);
+
+        int Update(TEntity Model);
+
+        bool DeleteByID(dynamic ID);
+
+        bool Delete(Expression<Func<TEntity, bool>> where);
+
+        int UpdateColumns(TEntity model, Expression<Func<TEntity, object>> expression);
+    }
+}