Table properties will be taken from the first argument which is a huxtable. So will
row properties (for cbind) and column properties (for rbind).
If some of the inputs are not huxtables, and copy_cell_props is a character vector of cell properties,
then for rbind, the named cell properties and row heights will be copied to non-huxtables. For cbind,
the named cell properties and column widths will be copied. Objects on the left or above get priority
over those on the right or below.
If copy_cell_props is TRUE, the default
set of cell properties (everything but colspan and rowspan) will be copied.
If copy_cell_props is FALSE, cells from non-huxtable objects will get the
default properties.