Support for subtitles?

[ping]

Are subtitles supported?
For example https://www.youtube.com/watch?v=XJGiS83eQLk has subtitles

$ youtube-dl --skip-download --write-sub "https://www.youtube.com/watch?v=XJGiS83eQLk"
[youtube] XJGiS83eQLk: Downloading webpage
[youtube] XJGiS83eQLk: Extracting video information
[youtube] XJGiS83eQLk: Downloading DASH manifest
[info] Writing video subtitles to: Creating Subtitles and Closed Captions on Your Youtube Videos-XJGiS83eQLk.en.srt

but with the api, it returns

      "requested_subtitles": null, 
      "subtitles": {}, 

Also, any chance of passing in user params for subtitles?

[jaimeMF]

You can use now &writesubtitles=true, thanks for the report.