hbar: date and datetime variable scales should be reversed

[davidhodge931]

plot_data <- storms %>%
  group_by(year) %>%
  summarise(wind = round(mean(wind), 2)) %>% 
  mutate(year = lubridate::ymd(glue::glue("{year}-01-01")))

gg_hbar(plot_data, wind, year)

tidyverse/ggplot2#4014