Provides tabular reporting functionalities to work with 'ReporteRs'
package: 'as.FlexTable' methods are available for 'ftable' and 'xtable' objects,
function 'FlexPivot' is producing a pivot table and 'freqtable' a percentage table,
a 'knitr' print method and a 'shiny' render function are provided for 'FlexTable' objects.