vioplot 0.3.0

Major changes

vioplot is not compatible with all inputs of boxplot or beanplot, including formula inputs (implemented as S3 methods.

Various features of violins can be tweaked with plotting parameters, such as colours and shapes of aspects of the violin. These can be applied to all violins with a single (scalar) input or applied separately to each violin with multiple (vector) inputs

This version is fully compatible with inputs to vioplot 0.2. The only difference in behaviour changing the default colour from a glaring magenta to a monochrome grey (more appropriate in a wider range of professional settings). Code written for previous versions should run without breaking or changes in behaviour apart from the default colour.