Add Tabu, LongTable and LongTabu global import
Add Tabu, LongTable and LongTabu global import

bjodah/PyLaTeX,jendas1/PyLaTeX,sebastianhaas/PyLaTeX,ovaskevich/PyLaTeX,sebastianhaas/PyLaTeX,ovaskevich/PyLaTeX,JelteF/PyLaTeX,votti/PyLaTeX,JelteF/PyLaTeX,votti/PyLaTeX,jendas1/PyLaTeX,bjodah/PyLaTeX