**Feature Request**
Brief title for your desired feature:
PCB布线泪滴功能
How would you like the feature to work?
为PCB走线和焊盘(过孔)连接处自动添加(或删除)泪滴型布线。(请参考AD10软件PCB泪滴功能)
Why is this feature important to you?
为走线添加泪滴后可以增强导线连接,并使焊盘与走线平滑过渡。而且属于自动添加,所需工作量小。