v0.6.0

Changes:

• Theme engine!
• Use a proper DB to store library: not in RAM anymore
• Show playing track's title in tray menu
• Ability to select multiple tracks
• Ability to add/remove tracks to/from playlists
• Shortcuts: Ctrl/Cmd+k to hide sidebar, Ctrl/Cmd+A to select all
• Show a loading spinner during network ops in settings
• Increment track count on Google Play Music
• Ability to choose YouTube playback quality
• Remove color from menu items
• Set volume indicator to red when muted
• Ability to disable update checks
• Better track buffering
• Better arrow scrolling
• Less annoying license popup
• Speed & stability improvements
• Upgrade Electron
• Ability to create non-services plugins
• Simpler code & easier plugin creation
• Other small changes

Fixes:

• Fix Google Play Music playing track from YouTube at first
• Fix Google Play Music liking/unliking tracks
• Fix Spotify Operations before loading library
• OSX: Fix Tray icon too big
• OSX: Fix window fully draggable, making app hard to use
• OSX: Fix dark theme not fully applying to header
• Fix clicking on not-yet loaded playlist
• Fix View artist/album view
• Other small fixes