rtables v0.3.3

This version completely refactors the rtables package. We do provide a backwards compatibility layer with the
rtable, rcell, rrow, rheader, and rtabulate family of functions. However the table data structure and main
tabulation framework have changed. We provide extensive documentation in the manuals help(package = "rtables") and
vignettes vignette(package = "rtables") of the package.

The changes to rtables have been undertaken to better meet the requirements of creating and analyzing & reporting
tables in the context of clinical trials.