0.6
  - Rebuilt vignette now in knitr
  - Using the new Rcpp syntax
  - corrected imports so it works with new CRAN checks
0.5 
  - Corrected calculations of aspect ratio - that was a serious bug that
    prevented correct rendering in all but most simple device layouts
  - Added a vignette
  - Added this NEWS file
  - Added the "snake" algorithm
  - Corrected the clist and list algorithms
  - Minor corrections in the package description and manuals
