Changes in version 0.1.1 (2026-05-11)                  

Major changes

  - Added support for rectangular field layouts in mixed-level factorial
    row-column design construction.
  - Added repair utilities for improving disconnected or partially
    connected row-column designs using bounded treatment-swap searches
    while preserving the row-column layout structure.
  - Added additional diagnostic tools for connectedness, orthogonal
    factorial structure, balance, estimability, and selected optimality
    criteria.

Documentation and examples

  - Added roxygen2 documentation for exported functions.
  - Added small executable examples to support automatic testing during
    R CMD check.
  - Updated package description to mention square layouts, rectangular
    layouts, diagnostic tools, and repair utilities.

Output and usability

  - Reduced unnecessary console output from non-print functions.
  - Moved user-facing display output to print methods or made it
    controllable through verbose arguments where appropriate.
  - Removed top-level executable code from package source files.

Bug fixes and maintenance

  - Improved CRAN check compatibility.
  - Removed invalid imports of base functions from stats.
  - Cleaned internal helper documentation and package-level roxygen
    directives.