Changes in version 0.7                         

  - forward.search() now throws an error when no unique base set can be
    found (occurs when the defined model is exactly identified, and
    therefore perfectly fits the data)

  - added a progress argument to gCD(), LD(), and GOF() to print the
    progress of the iterations

                  Changes in version 0.5 (2015-04-27)                   

  - several orgainizational overahauls
    
      - split LD() into LD() and GOF() for better clarity
    
      - avoid masking lavaan::sem with sem::sem

                  Changes in version 0.4 (2014-05-24)                   

  - better use of the parallel package for faster computing in most
    functions (most notably in the forward.search implementation)
    
      - numerical tests added for better package stability
    
      - more flexible passing of lavaan-type models and other functions
        used within the package