CHANGES IN VERSION 1.15.6
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    o Updated NEWS file to track changes in the package.

CHANGES IN VERSION 1.15.5
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    o Modified vignette to replace Rclass and Rfunction sweave syntax with
      markdown syntax.

CHANGES IN VERSION 1.15.4
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    o Modified vignette to add images via knitr::include_graphics.

CHANGES IN VERSION 1.15.3
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    o Changed vignette output format to html_document.

CHANGES IN VERSION 1.15.2
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    o Reformatted author section in the vignette yaml header.

CHANGES IN VERSION 1.15.1
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    o Fixed bug in the predictStrand function caused by the new behaviour of
      the data.frame introduced in R 4.0. Have to manually set
      stringsAsFactors=TRUE.