Request - extra connection points on boxes

I love Dia, but there is one thing that would make it even better! Can we have the ability to add connection points to the sides of boxes please?
At the moment I add them to a straight line, then attach that to the side of the box. It would be really good to be able to do it directly.
Also a question. Dia doesn’t seem to have been updated since 2014. Is it still being developed?