Changes in r2spss version 0.2.0
+ More detailed documentation of returned objects.
+ Bugfix in regression() regarding computation of standardized coefficients.
+ Bugfixes in regression() regarding nested model comparisons.
+ Added argument 'change' to function regression() such that tests on the
R-squared change are only included in model summaries when requested.
+ Added argument 'exact' to wilcoxonTest() such that the p-value of the
exact Wilcoxon Rank sum test is only computed when requested.
+ Plots now have horizontal axis labels by default, and scientific number
format in axis annotations is suppressed.
+ Added Eredivisie data set and examples.
+ Added Exams data set and examples.
+ Added package vignette.