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.