def sort
      objects.values.each do |object|
        SORTABLE_ITEMS.select { |key| object.has_key?(key) }.each do |key|
          object[key].sort_by!(&method(:comparator))
        end
      end
      project
    end
def sort
      objects.values.each do |object|
        SORTABLE_ITEMS.select { |key| object.has_key?(key) }.each do |key|
          object[key].sort_by!(&method(:comparator))
        end
      end
      project
    end
Returns a new instance of Sorter

 @param project [Hash] the project to sort
 Traverses the objects in the project clone and sorts in place
 objects that are held under the `SORTABLE_ITEMS` keys

 @return [Hash] a sorted project