Changes to Version 2.7-1
o Added repeatedMeasuresPlot().
o Added reshapeL2W() and reshapeW2L().
o The stringsAsFactors argument to readSAS(), readSPSSS(),
readStata(), and readXL() now defaults to FALSE.
o Barplot(), discretePlot(), Dotplot(), Hist(), plotMeans()
accommodate logical and character variables as grouping factor(s).
Changes to Version 2.7-0
o Added discreteCounts() and piechart() (after suggestions of Ethan Harris).
o Added counts/percents to bars in Barplot() (suggestion of Ethan Harris).
o Fixed DeltaMethod() so that it doesn't ignore the level argument
(reported by on de Haan).
o Small improvements.
a0419f0465