…ed on other websites.
Duration property now available.
… retrieved over https. 1.9.2's HTTP call was returning 'certificate verify failed'. https is not actually needed and the url has been changed to http. Specs now pass.
Many playlists reported by Youtube now have the form like in: http://www.youtube.com/playlist?list=PL520044A3524F5E5D where `PL` is prefixed to what youtube_search used to use as playlist IDs. So, we discard the `PL` with a regular expression and only get the `520044A3524F5E5D` in the case of the playlist of the example.