condformat_tbl object is a data frame with attributes regarding
the formatting of their cells, that can be viewed when the
object is printed.
A matrix or data.frame
condformat_tbl object. This object can be piped to apply
conditional formatting rules. It can also be used as a conventional
condformat_tbl print method generates an
htmlTable, to be
viewed using the 'RStudio Viewer' or an 'HTML browser', as available.