timing: en-es.txt/News-Commentary.en-es.en
  without module:
    real	7m27.331s
    user	18m18.743s
    sys	0m4.418s
  with module:
    real	7m26.401s
    user	18m47.365s
    sys   0m7.052s

wdiff: -s no_module.txt with_module.txt
  no_module.txt: 4566185 words  4560566 100% common  165 0% deleted  5454 0% changed
  with_module.txt: 4566002 words  4560566 100% common  29 0% inserted  5407 0% changed
