Automatic re-calculation of regionprops?

[yfukai]

While not sure if it is in the scope of this package, I believe some users want automatic re-calculation of the regionprops upon the mask update. Maybe we can connect the prop update callbacks to the node mask update, when the graph is generated by RegionPropNodes? But then I'm not sure how we can make this persistent.

[JoOkuma]

I'm leaning towards outside the scope of the package, but I'm ok with adding it if others also want this feature.

[yfukai]

Thanks, let me see what is better. Maybe we can provide a small util upon RegionPropsNodes that helps the recalculation.