Ability to use this while the app is unfocused or the screen is off

[kross-italk]

Hello, great library. It was very easy to get up and running with this in a new react-native project.

Does this library support accessing volume events while the App activity is unfocused (in another app, on the home screen) or when the screen is off entirely?

I want to get an event about volume button presses (Not volume changes, so android.media.VOLUME_CHANGED seems inappropriate as the base Intent). If this project isn't correct, can anyone point me in the right direction?