Youtube-dl

Core
* [YoutubeDL] Make sure format id is not empty
* [extractor/common] Make _family_friendly_search optional
* [extractor/common] Respect source's type attribute for HTML5 media (13892)

Extractors
* [pornhub:playlistbase] Skip videos from drop-down menu (12819, 13902)
+ [fourtube] Add support pornerbros.com (6022)
+ [fourtube] Add support porntube.com (7859, 13901)
+ [fourtube] Add support fux.com
* [limelight] Improve embeds detection (13895)
+ [reddit] Add support for v.redd.it and reddit.com (13847)
* [aparat] Extract all formats (13887)
* [mixcloud] Fix play info decryption (13885)
+ [generic] Add support for vzaar embeds (13876)

Core
* [utils] Skip missing params in cli_bool_option (13865)

Extractors
* [xxxymovies] Fix title extraction (13868)
+ [nick] Add support for nick.com.pl (13860)
* [mixcloud] Fix play info decryption (13867)
* [20min] Fix embeds extraction (13852)
* [dplayit] Fix extraction (13851)
+ [niconico] Support videos with multiple formats (13522)
+ [niconico] Support HTML5-only videos (13806)

Core
* Use relative paths for DASH fragments (12990)

Extractors
* [pluralsight] Fix format selection
- [mpora] Remove extractor (13826)
+ [voot] Add support for voot.com (10255, 11644, 11814, 12350, 13218)
* [vlive:channel] Limit number of videos per page to 100 (13830)
* [podomatic] Extend URL regular expression (13827)
* [cinchcast] Extend URL regular expression
* [yandexdisk] Relax URL regular expression (13824)
* [vidme] Extract DASH and HLS formats
- [teamfour] Remove extractor (13782)
* [pornhd] Fix extraction (13783)
* [udemy] Fix subtitles extraction (13812)
* [mlb] Extend URL regular expression (13740, 13773)
+ [pbs] Add support for new URL schema (13801)
* [nrktv] Update API host (13796)

Core
* [downloader/hls] Use redirect URL as manifest base (13755)
* [options] Correctly hide login info from debug outputs (13696)

Extractors
+ [watchbox] Add support for watchbox.de (13739)
- [clipfish] Remove extractor
+ [youjizz] Fix extraction (13744)
+ [generic] Add support for another ooyala embed pattern (13727)
+ [ard] Add support for lives (13771)
* [soundcloud] Update client id
+ [soundcloud:trackstation] Add support for track stations (13733)
* [svtplay] Use geo verification proxy for API request
* [svtplay] Update API URL (13767)
+ [yandexdisk] Add support for yadi.sk (13755)
+ [megaphone] Add support for megaphone.fm
* [amcnetworks] Make rating optional (12453)
* [cloudy] Fix extraction (13737)
+ [nickru] Add support for nickelodeon.ru
* [mtv] Improve thumbnail extraction
* [nick] Automate geo-restriction bypass (13711)
* [niconico] Improve error reporting (13696)

Core
* [YoutubeDL] Improve default format specification (13704)
* [YoutubeDL] Do not override id, extractor and extractor_key for
url_transparent entities
* [extractor/common] Fix playlist_from_matches

Extractors
* [itv] Fix production id extraction (13671, 13703)
* [vidio] Make duration non fatal and fix typo
* [mtv] Skip missing video parts (13690)
* [sportbox:embed] Fix extraction
+ [npo] Add support for npo3.nl URLs (13695)
* [dramafever] Remove video id from title (13699)
+ [egghead:lesson] Add support for lessons (6635)
* [funnyordie] Extract more metadata (13677)
* [youku:show] Fix playlist extraction (13248)
+ [dispeak] Recognize sevt subdomain (13276)
* [adn] Improve error reporting (13663)
* [crunchyroll] Relax series and season regular expression (13659)
+ [spiegel:article] Add support for nexx iframe embeds (13029)
+ [nexx:embed] Add support for iframe embeds
* [nexx] Improve JS embed extraction
+ [pearvideo] Add support for pearvideo.com (13031)

Core
* [YoutubeDL] Don't expand environment variables in meta fields (13637)

Extractors
* [spiegeltv] Delegate extraction to nexx extractor (13159)
+ [nexx] Add support for nexx.cloud (10807, 13465)
* [generic] Fix rutube embeds extraction (13641)
* [karrierevideos] Fix title extraction (13641)
* [youtube] Don't capture YouTube Red ad for creator meta field (13621)
* [slideshare] Fix extraction (13617)
+ [5tv] Add another video URL pattern (13354, 13606)
* [drtv] Make HLS and HDS extraction non fatal
* [ted] Fix subtitles extraction (13628, 13629)
* [vine] Make sure the title won't be empty
+ [twitter] Support HLS streams in vmap URLs
+ [periscope] Support pscp.tv URLs in embedded frames
* [twitter] Extract mp4 urls via mobile API (12726)
* [niconico] Fix authentication error handling (12486)
* [giantbomb] Extract m3u8 formats (13626)
+ [vlive:playlist] Add support for playlists (13613)