Greater configurability of the individuals view would be useful

[bhaller]

It would be great to be able to ask SLiMgui to show additional spatial maps alongside a subpopulation’s display, with/without the individuals overlaid.

The hard part here is figuring out what the user interface would be for this kind of configuration of the individuals view; I haven’t been able to think of a good design for this sort of customization. Part of the obstacle is that the individuals view is drawn by OpenGL and thus cannot easily contain text in it (like panel labels). Part of the obstacle is that all configuration of the individuals view is presently done through the context menu, and that’s just a crappy UI for detailed configuration of complex options.

So, this issue is a placeholder for things discussed with @petrelharp and @gbradburd, but I don't presently have a vision of what a fix for it would look like.