Changes in version 1.2                         

    o   added Multiple Groups DIF functions to compute MG-NCDIF

                  Changes in version 1.1 (2021-08-17)                   

    o   added functions for importing item parameters from mirt (Chalmers, 2012)

                 Changes in version 1.0-3 (2017-01-06)                  

    o   fixed citation to Raju, van der Linden & Fleer's 1995 paper.

    o   now imports stats functions that resulted in no visible bindings in more recent versions of R.

    o   added citation to JSS paper.

                 Changes in version 1.0-2 (2015-02-01)                  

    o   fixed CITATION

                 Changes in version 1.0-1 (2014-07-15)                  

    o   added functionality to CutoffIpr so that it may calculate the asymptotic variance-covariance matrices without

    o   providing them. Also added parameter nullGroup to specify which item parameters should be considered for the item

    o   replicates when calculated by the function.

    o   added logistic parameter to DeltaMhIrt function

    o   removed use of not exported functions in the demos