perspectiveR 0.3.0

• Added psp_schema(), psp_size(), psp_columns(), and psp_validate_expressions() proxy functions for table introspection.
• Added filter_op parameter for programmatic filter operators.
• Added limit parameter to cap the number of rows loaded into the table.
• Added expressions parameter for computed/virtual columns.
• Added windowed export support to psp_export() via start_row, end_row, start_col, and end_col parameters.
• Added three new demo apps: streaming stock market, editable table, and expression builder.

perspectiveR 0.2.0

• Added index parameter for keyed/indexed tables.
• Added psp_remove() to delete rows by primary key.
• Added psp_export() to export view data as JSON, CSV, columns, or Arrow.
• Added psp_save() to retrieve the current viewer configuration.
• Added psp_on_update() to subscribe to table update events.
• Added input$<outputId>_select event for row/data-point selection.
• Added theme support for dark mode and custom styling.

perspectiveR 0.1.0

• Initial release.
• perspective() widget with support for multiple chart types.
• Shiny integration via perspectiveOutput(), renderPerspective(), and perspectiveProxy().
• Proxy functions: psp_update(), psp_replace(), psp_clear(), psp_restore(), and psp_reset().
• Arrow IPC serialization for high-performance data transfer.
• Bundled Shiny demo app with run_example().