1.5.1:
   - made arguments xlab and ylab accessible to users

1.1.1:
   - simplified interface of plot()

1.1.0:
   - changed version number to 1.1.0 for consistency with previous
     versions published on the author's institute page
   - minor improvements of vignette (accessor functions)
   - fixed bug (error when calling predict() on a BString/AAString
     object without previously loading Biostrings)
   - fixed bug in predict() for short sequences

0.99.1:
   - minor changes to the code chunks in the vignette

0.99.0:
   - first version submitted to Bioconductor