New permutation tools, useful for for Kemeny-Young
Add some sugar on Permutation class
New Permutation tools for Kemeny-Young.
Kemeny-Young now support 9 candidates (max).
Optimized for speed Kemeny-Young calcRankingScore()
Optimized for speed Kemeny-Young calcPossibleRanking()
Finally, Kemeny-Young can't easily supprt more than 8 candidates. Back to 8 by default.
Some fresh & news computing cache for Kemeny-Young