Changes in Version 0.5-9

    o bug fixes: lavaan parameter counts with equality constraints, mirt DiscreteClass (credit to Seongho Bae)

Changes in Version 0.5-8

    o add support for objects of DiscreteClass from mirt package (credit to Phil Chalmers)

    o bug fix and improved check for object calls

Changes in Version 0.5-7

    o internal change so that nonnest2 is more likely to work with new object classes

Changes in Version 0.5-6

    o add initial functionality for OpenMx models (credit to Mauricio Garnier-Villarreal)

Changes in Versions 0.5-4 and 0.5-5

    o fix bugs for lavaan models with missing data, where some rows of the data matrix
      were fully missing

Changes in Version 0.5-3

    o simplify llcont() for mlogit models (credit to Yves Croissant)

    o fix for AIC/BIC adjustments to test statistics (credit to Thomas Hielscher)

    o handle sampling weights for mirt models, throw error for lavaan sampling weights

Changes in Version 0.5-2

    o new vuongtest() arguments ll1, ll2, score1, score2, vc1, vc2 for
      sending in custom functions that obtain casewise log-likelihood,
      scores, and vcovs from fitted models

    o add packages to Suggests, fix a failing test

Changes in Version 0.5-1

    o llcont() for lavaan objects with fixed.x=TRUE is corrected

Changes in Version 0.5

    o include llcont() method for mirt objects (credit to Lennart Schneider)
      and find mirt's estfun.AllModelClass()

    o lavaan changes: allow for inclusion of completely missing 
      cases and stop if missing = "listwise" or "pairwise"

    o return error for lavaan models with fixed.x=TRUE (incorrect results)

    o fix scaling issues in vcov associated with lm/glm/nls

Changes in Version 0.4

    o Update handling of missing data to conform to lavaan 0.5-21.

    o Throw error in case lavaan model with robust SEs is sent in.

Changes in Version 0.3

    o Added "Getting started" vignette.

    o Changes to conform to lavaan 0.5-20's handling of equality constraints.

    o Fixed issue where print methods sometimes wrapped over lines.

    o Fixed bug in llcont() for lavaan cases missing all data except
      one variable.

Changes in Version 0.2

    o Added argument "nested" to vuongtest(), allowing the user
      to specify whether or not candidate models are nested.  This
      impacts the limiting distribution of the Vuong LRT.

    o Added argument "adj" to vuongtest(), allowing the user
      to obtain test statistics with AIC or BIC adjustments.

    o print methods no longer display the full call of each model
      (just the first line).

    o BIC intervals added for objects of class hurdle, zeroinfl, 
      mlogit (were missing because they didn't have an nobs method).
