Function speedruns::data::leaderboard::leaderboard

pub fn leaderboard(
    runs: &[Linked<Run>], 
    rank_obsoletes: bool
) -> Vec<LeaderboardRun>

Ranks a set of runs (all for the same game/category/level) using the timing specified for the game rules, then by run date, then by submission datetime, discarding lower-ranked runs by the same runner unless rank_obsoletes is true.