Changes to Version 3.0-0

	o Compiled code for optimization.
	
	o Added multi-group models.
	
	o Modification indices for equality-constrained parameters.
	
	o weights argument added to tsls().
	
	o raw argument added to cfa().

Changes to Version 2.1-2

    o Suppress R^2s when raw moments used (they were not computed correctly).
    
    o Enhancements to update.semmod() and new edit.semmod() (suggestions of Michael Friendly).

Changes to Version 2.1-1

    o Added cfa() for compact specification of confirmatory factor analysis models.

Changes to Version 2.1-0

	o Added equation-style model specification, via specifyEquations()
	
	o Fixed bug in classifyVariables() when <- (rather than ->) used in the model.
	
	o Fixed bug in vcov.sem() when the model has just one structural parameter or just one variance/covariance parameter.

Changes to Version 2.0-0

    o Completely reworked version of the sem package. See CHANGES file for changes to older versions.