Performs a stability analysis based on the Kang (1988)
criteria. Kang nonparametric stability (ranksum) uses
both "trait single value" and stability variance (Shukla, 1972),
and the genotype with the lowest ranksum is commonly the most favorable one.
Usage
stab_kang(.data, .y, .rep, .gen, .env)
# S3 method for default
stab_kang(.data, .y, .rep, .gen, .env)