#335 Making layout update when sliders change nodes present. The force layout seems to be interfering with the circle placement a lot. I need to compare behavior before and after the changes I am committing.
#335 Have the mapping count filter, central layout, and slider all playing nicely. The layout does not recompute positions though. Nodes made visible appear to be mixed in along the circle in a way I don't understand. WIll fix that next.