Log Message:
youtube-dl: Update to 20190208

Changes:
version 2019.02.08

Core
* [utils] Improve JSON-LD regular expression (#18058)
* [YoutubeDL] Fallback to ie_key of matching extractor while making
  download archive id when no explicit ie_key is provided (#19022)

Extractors
+ [malltv] Add support for mall.tv (#18058, #17856)
+ [spankbang:playlist] Add support for playlists (#19145)
* [spankbang] Extend URL regular expression
* [trutv] Fix extraction (#17336)
* [toutv] Fix authentication (#16398, #18700)
* [pornhub] Fix tags and categories extraction (#13720, #19135)
* [pornhd] Fix formats extraction
+ [pornhd] Extract like count (#19123, #19125)
* [radiocanada] Switch to the new media requests (#19115)
+ [teachable] Add support for courses.workitdaily.com (#18871)
- [vporn] Remove extractor (#16276)
+ [soundcloud:pagedplaylist] Add ie and title to entries (#19022, #19086)
+ [drtuber] Extract duration (#19078)
* [soundcloud] Fix paged playlists extraction, add support for albums and update \ 
client id
* [soundcloud] Update client id
* [drtv] Improve preference (#19079)
+ [openload] Add support for openload.pw and oload.pw (#18930)
+ [openload] Add support for oload.info (#19073)
* [crackle] Authorize media detail request (#16931)

version 2019.01.30.1

Core
* [postprocessor/ffmpeg] Fix avconv processing broken in #19025 (#19067)

version 2019.01.30

Core
* [postprocessor/ffmpeg] Do not copy Apple TV chapter tracks while embedding
  subtitles (#19024, #19042)
* [postprocessor/ffmpeg] Disable "Last message repeated" messages (#19025)

Extractors
* [yourporn] Fix extraction and extract duration (#18815, #18852, #19061)
* [drtv] Improve extraction (#19039)
    + Add support for EncryptedUri videos
    + Extract more metadata
    * Fix subtitles extraction
+ [fox] Add support for locked videos using cookies (#19060)
* [fox] Fix extraction for free videos (#19060)
+ [zattoo] Add support for tv.salt.ch (#19059)