Changes in version 1.1-0                        

Internal

  - Added R/gexp-utils.R with shared helpers for error simulation,
    response assembly, data-frame binding, result packing, and contrast
    merging; all nine gexp.* methods now call these helpers (no change
    in exported behaviour).
  - Extended gexp-utils.R with helpers for default fixed effects, block
    effects, treatment/contrast construction, row/column LSD layout, and
    interaction terms; RCBD and LSD methods now use these (behaviour
    unchanged).
  - Added split-plot helpers (.gexp_zformula, .gexp_Z, .gexp_spe_finish)
    for whole-plot Z matrix construction and the shared SPE response
    tail; gexp.spe_crd, gexp.spe_rcbd, and gexp.spe_lsd now use them
    (behaviour unchanged).
  - Added R/gexp-plot-utils.R with shared helpers for layout centres,
    static/dynamic frames, grids, labels, and locator text; all nine
    plot.gexp.* methods now use them.
  - Fixed plot label coordinates when row and column centre vectors
    differ in length (e.g. factorial RCBD and split-plot layouts).
  - Fixed LSD rowl/coll when passed as bare character vectors (default
    names Row/Column); named lists remain the documented form.
  - Fixed factorial and CRD plot label placement (overlapping treatment
    labels in empty cells) by restoring correct rep() coordinates in
    gexp-plot-utils.R.
  - Fixed SIMPLE RCBD plot layout (block labels misaligned with rows) by
    restoring row/column centre assignment in plot.gexp.simple_rcbd.R.

Code style

  - Reformatted all sources under R/ for readability (aligned named
    arguments, consistent spacing, and line breaks at commas) without
    changing program logic.
  - Re-applied the same formatting to gexp-utils.R, gexp-plot-utils.R,
    and all gexp.* / plot.gexp.* methods after the internal refactor
    (multi-argument calls broken at commas, named arguments aligned).
  - Renamed vignettes/intro.Rmd to vignettes/gexp-overview.Rmd with
    conventional R code spacing in examples (aligned with standard
    style, distinct from /R sources).
  - Revised vignette prose: improved English and translated remaining
    Portuguese passages.

Documentation

  - Added demo/ with nine runnable examples (demo(package = "gexp"))
    covering every type x design combination (SIMPLE, FE, SPE x CRD,
    RCBD, LSD); all demos use explicit fl, blkl, rowl, and coll labels
    where applicable.
  - Standardized author names to scientific notation (Faria, J. C.;
    Allaman, I. B.) across the package.
  - Migrated package history from ChangeLog to NEWS.md.
  - Refactored README.md to match the documentation standard used in
    sibling packages (badges, features, installation, quick start,
    project layout, contributing, and roadmap).
  - Updated DESCRIPTION metadata (Authors@R, BugReports, reformatted
    Description, License: GPL-2, R (>= 4.1.0)); maintainer remains
    Allaman, I. B.
  - Removed prebuilt vignette artifact inst/doc/intro.html from the
    repository.

Infrastructure

  - Added .Rbuildignore to exclude version-control and check artefacts
    from package builds.
  - Added .gitignore and .Rbuildignore rules to keep locally rendered
    vignettes/*.html out of the repository.
  - Added a testthat suite under tests/testthat/ with smoke tests for
    core design generation, summary, print, and plot.

                 Changes in version 1.0-21 (2023-06-21)                 

  - Adjusted files as required by CRAN.

                        Changes in version 1.0-2                        

  - Changed character columns to factors in gexp.fe_lsd() and
    gexp.simple_lsd().

                 Changes in version 1.0-1 (2020-04-02)                  

  - Fixed a bug in gexp.spe_lsd(): added stringsAsFactors = TRUE when
    calling data.frame(), matching the default change in newer R
    versions (stringsAsFactors = FALSE).

                 Changes in version 1.0-0 (2019-06-14)                  

  - Split the former type argument into two arguments: type (SIMPLE, FE,
    SPE) and design (CRD, RCBD, LSD).
  - Added new methods for generic gexp: simple_crd, simple_rcbd,
    simple_lsd, fe_crd, fe_rcbd, fe_lsd, spe_crd, spe_rcbd, and spe_lsd.
  - Removed nrand and random from the gexp functions; added random to
    the plot functions instead.
  - Added internal helpers: makeInteraction, makeContrasts,
    makeTreatments, and makeXBeta.
  - Optimized code across all functions.
  - Updated .Rd files, vignettes, NAMESPACE, and DESCRIPTION to reflect
    the new API.
  - Minor documentation corrections.

                        Changes in version 0.1-6                        

  - Fixed incorrect calculations for quantitative factors in RCBD and
    LSD designs.

                        Changes in version 0.1-5                        

  - Updated NAMESPACE for consistency with the package API.

                 Changes in version 0.1-4 (2019-04-14)                  

  - Minor documentation corrections.
  - Released to CRAN.

                        Changes in version 0.1-3                        

  - All plot functions now restore graphics parameters changed via
    par(xaxs = "i", yaxs = "i") when returning to the device.
  - Minor changes to the source code of some functions.

                        Changes in version 0.1-2                        

  - Corrected the package name typo (gerexp → gexp) in gexp-package.Rd.
  - Corrected the date entry for version 0.1-1 in the change log.

                        Changes in version 0.1-1                        

  - Fixed encoding issues in some documentation (.rmd) files that caused
    build failures.
  - General documentation improvements.

                        Changes in version 0.1-0                        

  - Initial release of the gexp package.