EstCRM_1.3 (2012-07-28) * Small changes are added to printing the EstCRMitem output. EstCRM_1.2 (2012-02-2) * A vignette will appear soon in the next version explaining all details of estimation algorithm used in the package * A new function bootCRM() is added to estimate the standard errors of item parameter estimates using non-parameteric bootstrap sampling EstCRM_1.1 (2011-06-17) * DESCRIPTION and Rd files are updated * A new dataset (SelfEff) and sample R codes to analyze the new dataset are added EstCRM_1.0 (2011-06-15) * initial release on CRAN