def precompute_old
      warn "This method should not be used, please use precompute instead."
      word_list.rewind.each do |line|
        word = line.chomp
        precomputed_list_old[word.split('').sort.join.freeze] += [word]
      end
    end
def precompute_old
      warn "This method should not be used, please use precompute instead."
      word_list.rewind.each do |line|
        word = line.chomp
        precomputed_list_old[word.split('').sort.join.freeze] += [word]
      end
    end
Initializes word_list instance variable, precomputed_list
 assigning it a hash whose default values is an empty array.

 Precomputes word_list in underneath the hood. (i.e A in-process
 thread that AsyncConsumer offers. )


 Used for benchmarking