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CHANGES IN CDM PACKAGE VERSIONS
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Changes in Version 1.1-0_1 (2012-07-08)

 o highest argument deleted from print.din method
 o new argument for summary.din n.skill.classes
 o skill pattern probabilities deleted from print.din
 o skill pattern summary replaced by n most frequent skill 
   classes in summary.din
 o (argument ask=TRUE in summary.din placed by overwrite=FALSE)
 
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Changes in Version 1.1-0 (2012-06-23)
 
 o use a different item discrimination index (Lee et al., 2012)
 o remove GDINA estimation from this package version because
   it is in an experimental status 
     -> gdina will be included in CDM >= 1.1-1
 o new optional attribute for q-matrix specification list of skill 
   labels
 o changed ouput in din function
    -> pattern, like and posterior are sorted according to the original 
       input data frame
 o remove a bug for models with only attribute
 o new argument for din method zeroprob.skillclasses
 o new argument for din method equal.itempars
 o new arguments for summary.din method log.file and ask
 o minor bug fixes in print.din method
 o replace internal method rowProds with faster rowProds2
 o option for writing an output file of model results included in 
   function summary.din 
 
 