tacoplot_stack pie = TRUE suggestions

[david-barnett]

To avoid misuse I feel the pie = TRUE should error if more than one sample is supplied. Or at least have an example of reasonable use.

library(tidytacos)
urt %>%
  filter_samples(sample_id == "s169") %>%
  tacoplot_stack(pie = TRUE)

urt %>%
  filter_samples(participant == "CON83") %>%
  tacoplot_stack(pie = TRUE)

urt %>% 
  filter_samples(location == "N", method == "S") %>%
  tacoplot_stack(pie = TRUE)

^{Created on 2024-07-25 with reprex v2.1.1}