Current behavior

auto_bin() accepts outlier_color to style the outlier bin, but the outlier label is auto-generated (e.g. >1.00). There is no way to customize it.

Request

Add an outlier_label parameter so users can override the default label text. The default should remain the current auto-generated format.

Updated signature:

auto_bin(
  x,
  palette = "default",
  bin = 6,
  decimals = 2,
  round_to = 50,
  reverse = FALSE,
  labels = NULL,
  outlier_threshold = NULL,
  outlier_color = "#636363",
  outlier_label = NULL
)

When outlier_label = NULL (default), keep the current auto-generated label. When a string is provided, use it as the bin label.

Checklist

• Add outlier_label parameter to auto_bin() in R/auto_bin.R
• Update roxygen docs (@param, @examples)
• Add/update tests in tests/testthat/test-auto_bin.R for the new parameter
• Run devtools::document() to regenerate man/ and NAMESPACE
• Run devtools::test() — all tests pass
• Run devtools::check() — no errors, warnings, or notes