Changes in version 2.0.0                        

Major new architecture: the viewdt() data explorer widget

ViewR 2.0.0 introduces an entirely new, dependency-free htmlwidget data
explorer built from scratch in vanilla JavaScript (no React, no build
toolchain). It is portable: render it in the RStudio/Positron Viewer,
inside Shiny, in R Markdown / Quarto, or export it to a standalone HTML
file.

  - viewdt(data, options = viewdt_options()) — opens the modern
    explorer.
  - viewdt_options() — configure theme, labels, hidden columns, NA
    string, visual features, and the viewer-cap safeguard.
  - save_viewdt() — export any data frame to a portable, offline HTML
    grid.

Explorer features

  - Virtualized grid that paints only visible cells, with sticky headers
    and a sticky row-index column; click a row to pin it.
  - Kaggle-style micro-dashboard headers: data-type badges, mini
    distribution spark-histograms (numeric) / top-category stacked bars
    (categorical), and a colour-coded data-completeness (missingness)
    bar.
  - Column metadata cards on the info icon: rows, unique, missing %, and
    Min/Mean/Median/Max or Top-5 categories.
  - Data Insights drawer with an interactive SVG histogram (numeric) or
    Pareto bar chart (categorical), completeness meter, and descriptive
    stats.
  - Visual query builder: multi-condition AND/OR filters with type-aware
    operators and a searchable multi-select for categorical columns.
  - Column visibility picker and global search.
  - Reproducible code generator: copy-pasteable dplyr, base R, and SQL
    matching the active filter + visible-column state.
  - Light / dark / auto theme, variable-label display, and custom NA
    string.

The legacy Shiny-gadget editor remains available as ViewR().

                        Changes in version 0.2.0                        

New features

  - Excel-like editor (edit = TRUE): powered by rhandsontable, supports
    inline cell editing, row addition via right-click context menu or
    the Add Row button, and unlimited undo / redo.

  - Find & Replace tab: search for a literal string, regex pattern, or
    exact cell value across one or all columns. A live Preview diff
    table shows matched cells before changes are committed.

  - Variable Info tab: one-row-per-column summary of data type, N,
    missing count, missing %, unique count, min, max, and sample values.

  - R Code tab (generate_code = TRUE): live dplyr pipeline that reflects
    all current filters, sorts, column selections, and find-and-replace
    operations. Copy to clipboard button included.

  - Multi-condition Filters with AND / OR logic and eleven operators:
    ==, !=, >, >=, <, <=, contains, starts with, ends with, is NA, is
    not NA.

  - Multi-column Sort: add as many ordered sort levels as needed, each
    independently ascending or descending.

  - Column visibility panel: show / hide any column; bulk All / None
    toggles.

  - Variable labels: automatically read from column "label" attributes
    (e.g. from haven::read_spss()); displayed as hoverable tooltips on
    column headers in the Data View table.

  - Twelve Bootstrap themes via shinythemes: "flatly", "cerulean",
    "cosmo", "darkly", "lumen", "paper", "readable", "sandstone",
    "simplex", "spacelab", "united", "yeti".

  - install_viewr_deps(): helper to detect and install all required
    packages in one call.

  - Pipe-friendly: ViewR() accepts piped input and returns the working
    data frame invisibly when the user clicks Done.

Bug fixes

  - Type coercion after find-and-replace no longer depends on
    methods::as(); replaced with an explicit switch() over the original
    column class.

Internal changes

  - Separated UI, server, helpers, and code-generation concerns into
    dedicated source files (R/ui.R, R/server.R, R/helpers.R,
    R/code_gen.R).
  - Full testthat (edition 3) test suite covering filter engine, sort
    engine, find-and-replace, variable info, and code generation.
  - Added vignettes/ViewR-intro.Rmd introduction vignette.
  - Added _pkgdown.yml for the package website.
  - Hex sticker added to inst/sticker/.

                        Changes in version 0.1.0                        

  - Initial release: basic ViewR() stub.