Get the best submissions per team.
get_best(history, metrics = names(metrics), test_name = "quiz", decreasing = FALSE)
get_best returns a
data.frame where the rows are teams in sorted order of performance.
The best submission per team is retained. The sort is based on possibly several metrics in the order
given by the
In case of ties on the first metric, the second metric is used to break the ties, and so on. Lastly,
the date is used in case of ties. The columns are: