**Feature Request**
Brief title for your desired feature:
have different styles of end caps for tracks eg.rounded, square, oval
Why is this feature important to you?
Sometimes large tracks need to end on square pads, a rounded end overshoots the pad.
Also when approaching an oval pad from the side it would be good for the track to have a variable aspect rounded end.
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
