Version 0.4
    o fixed small printing bug in possibleNumeric()
    o function translate() is now more robust against non-printable
      characters

Version 0.3
    o function combinations() renamed to combnk()
    o improved function possibleNumeric() to deal with objects of
      class "haven_labelled"

Version 0.2
    o function combinations() renamed to combnk()

Version 0.1
    o start of the package

