v0.4.0

• added official support for Solus OS and Budgie desktop
• added proper theme support for KDE Plasma (thanks @DarkknightAK!)
• fixed icon display/resolution bugs in the theme index
• tweaked a bunch of symbolic action icons (margin/scaling adjustments mostly)
• moved actions/16x16 -> actions/22x22
• tweaked 16x16 places icons
• tweaked state-* icons for ownCloud/NextCloud
• updated lots of emblem icons
• modified/tweaked applications:
  • 0ad
  • 2048
  • 4kvideodownloader
  • BattleNet
  • World of Warcraft
  • 8-ball pool
  • Adobe AIR
  • Adobe Reader
  • Adobe Update
  • Abiword
  • Accessibility
  • Accessories (archivers, calculator, character-map, dictionary, document-viewer, image-viewer, media-converter, painting, text-editors)
  • Image/disk burners/rippers (Acetone, Acidrip, Brasero, etc.)
  • Chrome/Chromium
  • Steam
  • Sublime text
  • Terminal applications
  • Ubiquity
• redesigned:
  • Software centers (gnome-software, ubuntu software center, yast-software)
  • Tor Browser (old circular alternative icon still available)
  • Terminix (more closely resembles original icon now)
  • Youtube (circular alternative also available)
• new icons:
  • Ubuntu SDK IDE
  • Wireshark
• symbolic icons:
  • updated for GNOME 3.22+
  • device icons
• added/updated mimetypes:
  • Budgie *.desktop alternative
  • Keepass/KeepassX (updated)
  • Löve game files
  • pkcs12 certificate files
  • Revelation password manager
  • Solus packages (*.eopkg)
  • C/C++ source and header files