def most_significant(count = 3)
      support! :line_stats

      authors = ActorCollection.new
      sort_by { |author| -author.modifications }.each do |author|
        authors << author
        break if authors.size == count
      end
      authors
    end
def most_significant(count = 3)
      support! :line_stats

      authors = ActorCollection.new
      sort_by { |author| -author.modifications }.each do |author|
        authors << author
        break if authors.size == count
      end
      authors
    end
Returns up to the given number of actors in this collection with the
 biggest impact on the repository, i.e. changing the most code

 @param [Numeric] count The number of actors to return
 @return [ActorCollection] The given number of actors ordered by impact
 @see Actor#modifications