The webpage only contains shortened links for the videos, since the server doesn't support HEAD requests, we use an specific extractor for them.
Added vine user timeline extractor using unofficial vine api user profile and timeline api endpoints.
Apparently, CSpan switches between single-file and multiple-file results. Either one is fine as long as we get the full four hours.
The courses seems to be no longer available, changed the test to a playlist.
[imdb] Add support for IMDb list (#2033)