使用异步重构了节点执行方法，将触发器节点与其他节点统一。使用Channel代替Tcs更改了信号触发，使其符合异步编程的习惯。增加了节点是否启用勾选框、参数遮罩勾选框，节点右键面板增加中断功能（试验）。增加了选择后被选择的节点的视觉效果。更改平移缩放逻辑，使其更加符合一般的使用习惯。

NodeFlow/Model/SingleExpOpNode.cs

@@ -18,7 +18,8 @@ namespace Serein.NodeFlow.Model
         public string Expression { get; set; }
 
 
-        public override object? Execute(IDynamicContext context)
+        //public override async Task<object?> Executing(IDynamicContext context)
+        public override Task<object?> ExecutingAsync(IDynamicContext context)
         {
             var data = PreviousNode?.FlowData;
 
@@ -37,13 +38,13 @@ namespace Serein.NodeFlow.Model
                 }
 
                 NextOrientation = ConnectionType.IsSucceed;
-                return result;
+                return Task.FromResult(result);
             }
             catch (Exception ex)
             {
                 NextOrientation = ConnectionType.IsError;
                 RuningException = ex;
-                return PreviousNode?.FlowData;
+                return Task.FromResult(PreviousNode?.FlowData);
             }
 
         }