Merge branch 'master' of http://gitblit.broconcentric.com:8088/r/M071

wells.liu

2020-07-02 22658ee90bd0f8b7b89a6030c2edc7fbf6719c3a

 src/Bro.UI.Model.Winform/Element/ROI_Circle.cs

@@ -28,10 +28,6 @@
        {
        }

        public override void CalculateBaseRectangle()
        {
        }

        public override object Clone()
        {
            ROI_Circle circle = new ROI_Circle();