Wrap tables in statascii

[Gustavo Velásquez]

We should reimplement an updated wrap_tbl() function to wrap tables when the table width is longer than the console width. This should optimally repeat the first column of output when wrapping is necessary.

Example code to reproduce the issue:
library(statar)
tab(mtcars, mpg, cyl, disp, hp, drat, wt, qsec, vs, am, gear, carb)

[Matthieu Gomez]

I prefer to simply return a warning message in this case. 09dfd6e