Is there an official documentation for v4, besides "tmap v4: a sneak peek" [(link)](https://mtennekes.github.io/tmap4/index.html#Map_layers_(eg_cartogram))? It seems that the code on *Multivarite Scales* on that page needs to be updated to: ``` tm_shape(World) + tm_fill(fill = tm_mv("well_being", "footprint"), fill.scale = tm_scale_bivariate(scale1 = tm_scale_intervals(breaks = c(2, 5, 6, 8)), scale2 = tm_scale_intervals(breaks = c(0, 3, 6, 20)), values = "brewer.qualseq")) ``` Thanks!