Version: 0.1.0
Date: 2026-10-16
Category: Initial release
Text:

Version: 0.1.0
Date: 2026-10-16
Category: ADDED * Internal marginal maximum likelihood EM calibration
Text: (1PL, 2PL, 3PL): separate, concurrent (full or partial
        invariance, with chain, joint, and restricted joint
        compositions), fixed item parameter calibration (FIPC), and
        regularized calibration with a smooth Bayesian information
        criterion (SBIC).

Version: 0.1.0
Date: 2026-10-16
Category: ADDED * Polytomous items via the generalized partial credit
Text: model (GPCM) and the partial credit model (PCM) with separate
        calibration, chain and pairwise joint linking by every method,
        joint and pairwise Haberman linking, jackknife and approximate
        jackknife linking errors, EAP person scores, and a polytomous
        response simulator.

Version: 0.1.0
Date: 2026-10-16
Category: ADDED * Linking via link_groups() (chain, joint, restricted
Text: joint): mean-mean, mean-geometric mean, Haberman with robust Lq
        loss, Haebara, and Stocking-Lord, each joint method with a
        simultaneous and a pairwise variant, and a selectable reference
        group. The Haebara and Stocking-Lord criteria compare the full
        3PL response functions when guessing parameters are present.

Version: 0.1.0
Date: 2026-10-16
Category: ADDED * Linking errors: (bias-corrected) delete-one item
Text: jackknife, approximate one-step jackknife, and sandwich
        estimators. A cluster argument deletes whole testlets instead
        of single items in the jackknife and the approximate jackknife.

Version: 0.1.0
Date: 2026-10-16
Category: ADDED * Item parameter covariances, including dependent_vcov
Text: (stacked sandwich or person bootstrap) for dependent person
        samples.

Version: 0.1.0
Date: 2026-10-16
Category: ADDED * DIF diagnostics: root mean square deviation (RMSD
Text: statistics and per-item likelihood-ratio tests, with iterative
        purification.

Version: 0.1.0
Date: 2026-10-16
Category: ADDED * Person scores (expected a posteriori (EAP) and
        weighted
Text: likelihood (WLE) estimates), a response data simulator (uniform
        and non-uniform DIF, dependent person samples), and a
        linking-design inspector.

Version: 0.1.0
Date: 2026-10-16
Category: ADDED * Person sampling weights (pweights, e.g. senate
        weights
Text: in every calibration strategy.

Version: 0.1.0
Date: 2026-10-16
Category: NOTE * No runtime dependencies beyond base R and Rcpp
Text: