#2 Request: jcotton._group should support .remove()

[A.P. Sillers]

The function jcotton._canvas.remove(drawable) removes an object from the canvas, but there is no way in jcotton to remove a member of a group.

I've attached a simple patch that add this functionality. I copied the remove() function from the _canvas class into the _group class, and it seems to work perfectly.

[A.P. Sillers]

Patch to add the _group.remove() member function