grmtree 0.1.0 (2025)

This is the first official release of the grmtree package, providing methods for fitting and analyzing graded response model (GRM) trees and forests.

• Introduced grmtree() for fitting tree-based graded response models.

• Added grmforest() for building forests of GRM trees.

• Implemented custom print() and plot() methods for GRM tree/forest objects.

• Enabled node-level GRM parameter extraction (thresholds, loadings, discrimination).

• Added support for extracting and analyzing factor scores per terminal node.

• Included helper functions for working with terminal nodes and fitted models.

• Vignette walkthrough provided using a sample data.