youtube-dl 2021.06.06

Extractors

• [facebook] Improve login required detection
• [youporn] Fix formats and view count extraction (#29216)
• [orf:tvthek] Fix thumbnails extraction (#29217)
• [formula1] Fix extraction (#29206)
• [ard] Relax URL regular expression and fix video ids (#22724, #29091)

• [ustream] Detect https embeds (#29133)

• [ted] Prefer own formats over external sources (#29142)
• [twitch:clips] Improve extraction (#29149)

• [twitch:clips] Add access token query to download URLs (#29136)

• [youtube] Fix get_video_info request (#29086, #29165)
• [vimeo] Fix vimeo pro embed extraction (#29126)
• [redbulltv] Fix embed data extraction (#28770)
• [shahid] Relax URL regular expression (#28772, #28930)