Point Labeling Automation

Point-featured labeling automation has been improved in ListPlot, added to ListPointPlot3D and used by default in FeatureSpacePlot and FeatureSpacePlot3D. Labels are placed automatically to avoid overlapping with other points and other labels.

Use a Callout wrapper to construct labels for data of population versus GDP per capita for all countries.

Use ListPointPlot3D to show population, GDP per capita and poverty fraction.