Log Message:
audio/spotify-player: update to 0.3.0

There are many changes in spotify-player v0.3.0 compared to version v0.2.0.
The most notable change is adding Spotify Search API integration (#8).

Brief description of major changes:
-allow client to handle multiple requests at once by creating a new handling
thread for each request (#9)
-integrate Spotify Search APIs (#8)
-add scroll shortcuts for command help popup (#11)
-refactor terminal event handling codes (#12)
-improve application and code documentations
-and other small bug fixes, refactors, etc