Changes in Version 1.3-3

  o enhanced references in the vignette, CITATION and 
    man pages

  o fixed some outdated information in the vignette


Changes in Version 1.3-2

  o added new data set with bibliographic information about
    structural change publications


Changes in Version 1.3-1

  o renamed SP500 to SP2001 to avoid conflicts with MASS


Changes in Version 1.3-0

  o added NAMESPACE

  o improved dependency declaration in DESCRIPTION