-Added long clicks for popup and background player buttons on details fragment for append intents.
-Removed restrictions for preventing UI to show up when player is buffering.
-Fixed icons for all repeat modes.
-Added Progress bar to background activity when player is in not ready state.
-Fixed Track Selection when switching between video and audio only on video players.
-Fixed video player to enable tunnelling only after sdk > 21.
-Fixed activity exception from restarting after service is shutdown on earlier sdk versions.
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