Extractors
* [zdf] Rework extractors (11606, 13473, 17354, 21185, 26711, 27068,
27930, 28198, 28199, 28274)
* Generalize cross-extractor video ids for zdf based extractors
* Improve extraction
* Fix 3sat and phoenix
* [stretchinternet] Fix extraction (28297)
* [urplay] Fix episode data extraction (28292)
+ [bandaichannel] Add support for b-ch.com (21404)
* [srgssr] Improve extraction (14717, 14725, 27231, 28238)
+ Extract subtitle
* Fix extraction for new videos
* Update srf download domains
* [vvvvid] Reduce season request payload size
+ [vvvvid] Extract series sublists playlist title (27601, 27618)
+ [dplay] Extract Ad-Free uplynk URLs (28160)
+ [wat] Detect DRM protected videos (27958)
* [tf1] Improve extraction (27980, 28040)
* [tmz] Fix and improve extraction (24603, 24687, 28211)
+ [gedidigital] Add support for Gedi group sites (7347, 26946)
* [youtube] Fix get_video_info request