Enable Voice Notify to request audio focus when speaking

Hi, I'm a huge fan of Voice Notify, it's one of the main reasons I switched from iOS to Android.  However, a lot of the music I listen to is very loud, so it overpowers the spoken notifications.  Because of this, I added an ability to Voice Notify to allow it to request Audio Focus from the OS.  This means the OS will automatically pause/dim currently playing media while Voice Notify is speaking, and automatically resume playing when it's done.  I've made this behavior an option in the preferences pane, and tested it on my own phone, it works just fine.

Thanks,
-Scott-