Log Message:
youtube-dl: Update to 20190127

Changes:
version 2019.01.27

Core
+ [extractor/common] Extract season in _json_ld
* [postprocessor/ffmpeg] Fallback to ffmpeg/avconv for audio codec detection
  (#681)

Extractors
* [vice] Fix extraction for locked videos (#16248)
+ [wakanim] Detect DRM protected videos
+ [wakanim] Add support for wakanim.tv (#14374)
* [usatoday] Fix extraction for videos with custom brightcove partner id
  (#18990)
* [drtv] Fix extraction (#18989)
* [nhk] Extend URL regular expression (#18968)
* [go] Fix Adobe Pass requests for Disney Now (#18901)
+ [openload] Add support for oload.club (#18969)