[clipfish] Effect a better error message (#1842)
[youtube:playlist] Fix the extraction of the title for some mixes (#1844)

Like https://www.youtube.com/watch?v=g8jDB5xOiuE&list=RDIh2gxLqR7HM
[yahoo] Fix video extraction and use the new format system exclusively
[youtube:feeds] Use the 'paging' value from the downloaded json information (fixes #1845)
Merge branch 'master' of github.com:rg3/youtube-dl
[zdf] add a pseudo-testcase and fix URL matching
[zdf] Use _download_xml
release 2013.11.28