MFRCD 0.1.1

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.