List the metric versions bundled with rfair.
Value
Character vector of available metric versions (e.g. "0.8").
Examples
rfair_metric_versions()
#> [1] "0.8" "0.5" "0.5ssv2"
#> [4] "0.5ss" "0.5env" "0.7_software"
#> [7] "0.7_software_cessda" "0.6a2a" "0.4"
#> [10] "0.3" "0.2"