Add extractor for daum.net (closes #1330)
Credit  @Huarong for tv.sohu.com
[daum] Get the video page from a canonical url to extract the full id (fixes #1373) and extract description.
Add extractor for tvcast.naver.com (closes #1331)
[generic] Recognize html5 video in the format '<video src=".+?"' and only unquote the url when extracting the id (fixes #1372)
[youtube] Playlists: extract the videos id from ['media$group']['yt$videoid'] (fixes #1374)

'media$player' is not defined for private videos.
release 2013.09.05
[youtube] Urls like youtube.com/NASA are now interpreted as users (fixes #1069)

Video urls like http://youtube.com/BaW_jenozKc are not valid, but http://youtu.be/BaW_jenozKc is correct.
Vevo sig changed again, please update for us! Thanks very much! (fixes #1375)
Merge pull request #1378 from patrickslin/patch-6

Vevo sig changed again, please update for us! Thanks very much! (fixes #...
release 2013.09.06
[youtube] Fix detection of tags from HLS videos.
[youtube] Users: download from the api in json to simplify extraction (fixes #1358)

There could be duplicate videos or other videos if the description have links.
Do not re-download files for hashsum generation (Fixes #1383)
Merge remote-tracking branch 'origin/master'
release 2013.09.06.1
Fix add-versions
[youtube] Fix detection of feeds urls (fixes #1294)

Urls like https://www.youtube.com/feed/watch_later were being as users (before the last changes to YoutubeUserIE, as videos)
[youtube] Fix some issues with the detection of playlist/channel urls (reported in #1374)

They were being caught by YoutubeUserIE, now it only extracts a url if the rest of extractors aren't suitable.
Now the url tests check that the urls can only be extracted with an specific extractor.
Add an extractor for Metacritic