+ver 5.21:
+ Fix issue with SDP requests and wrong PDU size.
+ Fix issue with handling passive scanning triggers.
+ Add support for storing and loading connection parameters.
+ Add support for kernel background auto-connection feature.
+ Add support for Android Bluetooth Scan Parameters feature.
+ Add support for Android Bluetooth Device Information feature.
+ Add support for Android Bluetooth Health Device interface.
+
ver 5.20:
Fix issue with LED handling of PS3 controllers.
Add support for Android Bluetooth GATT server interface.