ydd: Add comment with list of formats

e555a08e-1eec-11e3-82c6-f0def1836eb5
youtube-dl: Updated to version 2013.09.16

$ git algd 2013.09.10..2013.09.16

* f9e66fb - release 2013.09.16
* 6c603cc - [devscripts/release] temporary workarounds
*   ef66b0c - Merge remote-tracking branch 'origin/master'
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* | 22b50ec - Starts of a Windows service
| * 5a6fecc - Add an extractor for southparkstudios.com (closes #1434)
| *   cdbccaf - Merge pull request #1422 from rzhxeo/xhamster
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| * | e69ae5b - [youtube] support youtube.googleapis.com/v/* urls (fixes #1425)
| * | 92790f4 - [soundcloud] Add an extractor for users (closes #1426)
| * | 471a5ee - Set the ext field for each format
| * | 19e1d35 - [mixcloud] Rewrite extractor (fixes #278)
| * | 0b7f311 - Now --all-sub is a modifier to --write-sub and --write-auto-sub (closes #1412)
| * | fad84d5 - [googleplus] Fix upload date extraction
| | * 9a1c32d - XHamsterIE: Add support for new URL format
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| * a921f40 - [ustream] Simplify channel extraction
| *   74ac9bd - Merge pull request #1413 from tewe/master
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| * \   94518f2 - Merge pull request #1409 from JohnyMoSwag/master (closes #1404)
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| * \ \   535f59b - Merge pull request #1350 from Jaiz909/description-keyerror-fix
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* | | | | 71cedb3 - [buildserver] Service installation and uninstallation
| * | | | dd01d65 - [gamespot] Update test video title
| * | | | ce85f02 - [youtube] update algo for length 82 (fixes #1416)
| * | | | ad94a6f - [canalplust] accept urls that don't include the video id (fixes #1415), extract more info and update test
* | | | | 353ba14 - [buildserver] Rely on repository license
* | | | | 83de794 - Add original buildserver from @fraca7
| | | | * bfd5c93 - Add Ustream channel support
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| * | | c247d87 - [funnyordie] fix video url extraction
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* | | 07ac9e2 - release 2013.09.12
* | | 6bc520c - Check for both automatic captions and subtitles with options `--write-sub` and `--write-auto-sub` (fixes #1224)
| | * f1d20fa - added kickstarter IE
* | e3dc22c - [youtube] Fix detection of videos with automatic captions
* | d665f8d - [subtitles] Also list the available automatic captions languages with '--list-sub'
* | 055e6f3 - [youtube] Support automatic captions with original language different from English (fixes #1225) and download in multiple languages.
* | ac4f319 - Credit @iemejia
* |   542cca0 - Merge branch 'subtitles_rework' (closes PR #1326)
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* | | 6a2449d - [howcast] Do not download from http://www.howcast.com/videos/{video_id}
| * | 7fad1c6 - [subtitles] Use self._download_webpage for extracting the subtitles
| * | d82134c - [subtitles] Simplify the extraction of subtitles in subclasses and remove NoAutoSubtitlesInfoExtractor
| * | 54d39d8 - [subtitles] rename SubitlesIE to SubtitlesInfoExtractor
| * | de7f344 - [youtube] move subtitles methods from the base extractor to YoutubeIE
| * | f8e5226 - [subtitles] made inheritance hierarchy flat as requested
| * |   cf1dd0c - Merge branch 'master' into subtitles_rework
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* | | 22c8b52 - In the supported sites page, sort the extractors in case insensitive
* | | 1f7dc42 - release 2013.11.09
* | | aa8f264 - [youtube] update algo for length 85 (fixes #1408 and fixes #1406)
* | | 648d25d - [francetv] Add an extractor for francetvinfo.fr (closes #1317)
* | |   df3e610 - Merge pull request #1402 from Rudloff/canalc2
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| * | | 6b361ad - Wrong property name
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* | | 5d8afe6 - Add an extractor for pluzz.francetv.fr (closes PR #1399)
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* | 72836fc - Merge branch 'master' into subtitles_rework
* | d6e203b - [subtitles] fixed multiple subtitles language separated by comma after merge
| * b3f0e53 - Fixed issue #1277 KeyError when no description.
* 06a401c - Merge branch 'master' into subtitles_rework
* bd2dee6 - Merge branch 'master' into subtitles_rework
* 18b4e04 - Merge branch 'master' into subtitles_rework
* d80a064 - [subtitles] Added tests to check correct behavior when no subtitles are available
* d55de6e - [subtitles] Skips now the subtitles that has already been downloaded.
* 69df680 - [subtitles] Improved docs + new class for servers who don't support auto-caption
* 447591e - [test] Cleaned subtitles tests
* 33eb0ce - [subtitles] removed only-sub option (--skip-download achieves the same functionality)
* 505c28a - Separated subtitle options in their own group
* 8377574 - [internal] Improved subtitle architecture + (update in youtube/dailymotion)
* 372297e - Undo the previous commit (it was a mistake)
* 953e32b - [dailymotion] Added support for subtitles + new InfoExtractor for generic subtitle download.
* 5898e28 - Fixed small type issue
* 67dfbc0 - Added exceptions for the subtitle and video types in .gitignore

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