This is a feature release of Google Play Music Desktop Player

Here is a quick run down of all things that have changed.
<ul style="padding-left: 20px">
  <li style="list-style-type: disc">NEW: Chromecast Support!!!!!</li>
  <li style="list-style-type: disc">NEW: The PlaybackAPI now has ZeroConf</li>
  <li style="list-style-type: disc">NEW: Native translations for German and Polish</li>
  <li style="list-style-type: disc">FIX: Javascript error has occured bug when starting up</li>
  <li style="list-style-type: disc">FIX: Tray icon is now the GPM favicon</li>
  <li style="list-style-type: disc">FIX: Ridiculous CPU usage in some circumstances</li>
  <li style="list-style-type: disc">FIX: The lyrics screen is now a lot nicer</li>
  <li style="list-style-type: disc">FIX: Correctly set App category on macOS</li>
  <li style="list-style-type: disc">FIX: Command + Left/Right now navigates back and forward on macOS</li>
  <li style="list-style-type: disc">FIX: Solve a lot of theming and mini player issues</li>
  <li style="list-style-type: disc">FIX: Display Tray Icon on KDE</li>
</ul>

Thanks to all the people who have helped with these features and fixes.