Enhancements

• Added Sequoia Abstract theme
• Added command line support for actions like selecting themes, refreshing wallpaper, and toggling theme mode (#585)

Bug Fixes

• Fixed error that could happen when changing theme and in a region where sun stays up all day (#599)
• Fixed crash on startup when number of monitors has increased since the last time app ran (#604)
• Fixed automatic location not updating when app is restarted or Refresh Wallpaper command is run