<commit_before>### ``createHash(str)``
Returns ``md5`` hash hex string of ``str``.

- `str` `<String>`

```js
var hash = PV.createHash('hello world');
```<commit_msg>updated create hash description<commit_after>### ``createHash(str, len)``
Returns ``sha1`` hash hex string of ``str``.

- `str` `<String>`
- `len` `<Number>`: Optional, default is unlimited.

```js
var hash = PV.createHash('hello world', 13);
```
{'fraction_non_alphanumeric': 0.22815533980582525, 'fraction_numerical': 0.009708737864077669, 'mean_word_length': 5.770491803278689, 'pattern_counts': {'":': 0, '<': 6, '<?xml version=': 0, '>': 6, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '3797860', 'n_tokens_mistral': 152, 'n_tokens_neox': 139, 'n_words': 43}