R/xgx_stat_ci.R
StatSummaryBinQuant.RdSource: https://github.com/tidyverse/ggplot2/blob/351eb41623397dea20ed0059df62a4a5974d88cb/R/stat-summary-bin.R
StatSummaryBinQuantggplot2 ggproto object
StatSummaryBinQuant returns a ggproto object for plotting mean +/- confidence bins