Changes in version 0.8.0 (2026-08-08)                  

First CRAN submission. This release settles the public API before the
package has any users to break, so it carries deliberate breaking
changes.

Breaking changes

  - plot_regr() is renamed plot_regression(). Every other
    interactive/plot pair already matched its gadget name; this was the
    last one that did not. There is no deprecation shim — the package
    has never been released.

  - interactive_matrix_inverse() drops the _init suffix from its
    arguments: x1_init, y1_init, x2_init, y2_init are now x1, y1, x2,
    y2. They now match plot_matrix_inverse(), so do.call() works between
    them.

  - All eight interactive_*() gadgets return a new reproduction object
    when you click Done. Previously interactive_matrix_inverse() and
    interactive_t_test() returned nothing at all, and
    interactive_moderation_3d() returned the data frame while discarding
    the viewing angles the gadget exists to set. interactive_pca() no
    longer returns a two-element list(points, pca); the points come back
    directly and the prcomp result is attached as an attribute.

New features

  - Every gadget prints the plot_*() call that reproduces what was on
    screen when you click Done, with arguments still at their defaults
    omitted. The returned object is a plain list (settings-style
    gadgets) or a plain data frame (points-style gadgets), so
    do.call(plot_fn, result), nrow(), [ and passing the result straight
    back to the plot function all work. See ?"compstatslib-reproduce".

  - Derived state that a user would not retype rides along as an
    attribute rather than cluttering the printed call: attr(result,
    "pca") from interactive_pca(), attr(result, "vars") from
    interactive_sampling().

  - interactive_t_test() accepts diff, sd, n, alpha and error_matrix
    seed arguments, so it can be launched pre-configured like the other
    gadgets.

Bug fixes

  - plot_regression(), plot_logit() and plot_sampling() no longer leave
    the caller's par() settings modified, as CRAN Repository Policy
    requires. The first two used to force par(family = "sans") rather
    than restoring what the caller had set; all three now restore on
    exit, including when the call errors part-way through.

  - plot_sampling() restores cex correctly. Its saved value was captured
    by the same par() call that set mfrow, and since mfrow resets cex as
    a side effect, the value it saved was already clobbered.

  - plot_matrix_inverse() labels its axes x and y. It built its empty
    plotting region with plot(NA, ...), which deparses its first
    argument into the axis labels, so the axes read Index and NA.

Documentation

  - Every exported function now documents its return value and carries
    runnable examples. Gadget examples use if (interactive()) throughout
    and show the round trip from gadget to plot function.

  - Package prose standardized on en-US spelling; Language: en-US
    declared.

  - The README documented a visualize_inverse() function that does not
    exist. Removed, and a section on reproducing an interactive session
    added.

                        Changes in version 0.7.1                        

  - Minimum R version raised to 4.1.0.

                        Changes in version 0.7.0                        

  - Added plot_scatter3d() and interactive_scatter3d(): a 3D point cloud
    with runtime column pickers, aspect / opacity / marker-size
    controls, and camera capture so a specific rotation can be
    reproduced non-interactively.
  - Added an R-CMD-check GitHub Actions workflow.

                        Changes in version 0.6.0                        

  - Added plot_moderation_3d() and interactive_moderation_3d() for
    visualizing moderated regression as a rotatable wireframe surface.
  - plot_moderation_3d() supports multi-predictor models; pass iv and
    mod to choose which two predictors go on the plot axes.
  - Bundled the synthetic moderation_data teaching dataset.

                        Changes in version 0.5.1                        

  - Documentation fixes: missing plot functions listed in the README,
    roxygen usage tags corrected.