Support Yandex Browser

Please, add support YaBrowser to script:

```
    ...

    /* Yandex Browser */
    (/yabrowser\/(\d+)\.(\d+)/.test(ua) && (re = RegExp)) ?
    g + ' yandex yandex' + re.$1 + ' yandex' + re.$1 + '_' + re.$2 :

    ...
```

About Yandex Browser: https://browser.yandex.ru
