Read one results.csv file and reformat into long-format
read.results.csv.file(
dt_dir,
year_range = 1931:2019,
q = c("Lower", "Median", "Upper"),
sex = NULL
)
the single directory to a results.csv file
year range desired, default to `1931:2019`
quantile desired, default to `c("Lower", "Median", "Upper")`
default to NULL, Sex is determined from `dt_dir`, unless specified
long-format dt containing all indicators