Chart-specific hover information and axis-nearest tooltips made values easier to inspect. A more comprehensive Cartesian axis system gave developers additional ways to describe scales and labels.
Navigation and playback controls joined legends, highlights, callouts, and selection. These features help readers move through data, identify a particular series, and understand why a point is worth attention.
Natural Earth provided a world basemap, while chart grammar and the spatial renderer also expanded. WebGL presentation, availability handling, and reproducible dependency builds were refined alongside the browser bundles.