perspectiveR - Interactive Pivot Tables and Visualizations with 'Perspective'

An 'htmlwidgets' binding for the 'FINOS Perspective' <https://perspective-dev.github.io/> library, a high-performance 'WebAssembly'-powered data visualization engine. Provides interactive pivot tables, cross-tabulations, and multiple chart types (bar, line, scatter, heatmap, and more) that run entirely in the browser. Supports self-service analytics with drag-and-drop column selection, group-by/split-by pivoting, filtering, sorting, aggregation, and computed expressions. Works in 'RStudio' Viewer, 'R Markdown', 'Quarto', and 'Shiny' with streaming data updates via proxy interface.