Log Message:
streamlink: update to 0.14.2, add test depends, take maintainership again

0.14.2:
    Fixed Twitch OAuth request flow (#1856)
    Fix the tv3cat and vk plugins (#1851, #1874)
    VOD supported added to atresplayer plugin (#1852, #1853)
    Removed tv8cati and nineanime plugins (#1860, #1863)
    Added mjunoon.tv plugin (#1857)

0.14.0:
    Multiple plugin fixes
    Bug fixes for DASH streams (#1846)
    Updated API call for api.utils hours_minutes_seconds (#1804)
    Updated documentation (#1826)
    Dict structures fix (#1792)
    Reformated help menu (#1754)
    Logger fix (#1773)

0.13.0:
    Initial MPEG DASH support has been added! (#1637) Many thanks to @beardypig
    As always, a ton of plugin updates
    Updates to our documentation (#1673)
    Updates to our logging (#1752) as well as log --quiet options (#1744) (#1720)
    Our release script has been updated (#1711)
    Support for livestreams when using the --hls-duration option (#1710)
    Allow streamlink to exit faster when using Ctrl+C (#1658)
    Added an OpenCV Face Detection example (#1689)

0.12.1:
    Small release to fix a pip / Windows.exe generation bug!

0.12.0:
    A ton of plugin updates (like always! see below for a list of updates)
    Ignoring a bunch of useless files when developing (#1570)
    A new option to limit the number of fetch retries (#1375)
    YouTube has been updated to not use MuxedStream for livestreams (#1556)
    Bug fix with ffmpegmux (#1502)
    Removed dead plugins and deprecated options (#1546)

Full detailed commit log:
    https://github.com/streamlink/streamlink/releases/