Add rhythmical_lengths to alternative output

[aitordiaz]

get_scansion("Verde abrigo azul", rhythmical_lengths=[7]) should return:

Ver dea bri go a zul

[aitordiaz]

Correct output:

{
  "type": "word",
  "content": "que",
  "lemma": "example_lemma",
  "morphologicalAnnotation": "example_morphologicalAnnotation",
  "translation": "example_translation",
  "wordNumber": 2,
  "wordSense": "example_wordSense",
  "partOfSpeech": "EX_partOfSpeech",
  "syllableList": [
    {
      "content": "que",
      "isStressed": false,
      "isWordEnd": true,
      "hasSinaeresis": null,
      "hasSynalepha": true,
      "coda": "example_coda",
      "nucleus": "example_nucleus",
      "onset": "example_onset",
      "is_stressed": false,
      "has_synalepha": true,
      "is_word_end": true
    }
  ]
},
{
  "type": "word",
  "content": "en",
  "lemma": "example_lemma",
  "morphologicalAnnotation": "example_morphologicalAnnotation",
  "translation": "example_translation",
  "wordNumber": 3,
  "wordSense": "example_wordSense",
  "partOfSpeech": "EX_partOfSpeech",
  "syllableList": [
    {
      "content": "en",
      "isStressed": false,
      "isWordEnd": true,
      "hasSinaeresis": null,
      "hasSynalepha": null,
      "coda": "example_coda",
      "nucleus": "example_nucleus",
      "onset": "example_onset",
      "is_stressed": false,
      "is_word_end": true
    }
  ]
},