Audio Playr 2.1

- Renamed the app to Audio Playr.
- Updated to Swift 4 for improved stability, performance and security.
- FFmpeg updated to the 3.3 "Hilbert" release.
- Now you can choose to auto play newly opened files. Preferences->General.
- Swedish localization fixes.
- Fixed a bug where it was possible to open multiple Equalizer/Inspector windows.