add option to choose what detectors are active (#50)
add option to delay unmute for a few seconds (#39)
add option for always-on notification to prevent ad-free from being killed by
OS. needed for devices such as MIUI. this includes a boot_completed
receiver, alarmservice timer and runs the
notification listener service in foreground (#51)
overhaul of music plugin, use system own ACTION_OPEN_DOCUMENT_TREE
dialog to choose music directory (#44)
add option to loop local music plugin until end of ad (#48)
change how audio is muted. use setStreamVolume instead of
adjustStreamVolume (#41)
Major merge of features for release 2.0