if both devices support SSP, initiator shall setup unauthenticated link unless connecting to SDP

GAP update to higher security level working

successfully enable encryption if security level 2 is requested for l2cap service

allow to send connection encryption command

fix sending of Connection Result - Pending, request authentication if security level isn't enough

reject connection (0x03 security block) if both have SSP, PSM != SDP, and connection is not ecncrypted

use link_key_type_t as defined in Link Notification Event

track link keys from PIN request as authenticated

track encryption status

read remote supported features and check for SSP on new connections

respond with pin code negative reply if in non-bondable mode

add bondable flag to hci and provide gap_set_bondable_mode

use uint8_t for address type

track use of random addresses in hci

added hci_local_bd_addr()

store LE Buffer size

started adding client-server functionality (SDP query)

answer HCI_EVENT_IO_USER_CONFIRMATION_REQUEST and HCI_EVENT_USER_PASSKEY_REQUEST if ssp_auto_accpet is set, provide hci_ssp_set.. API

answer HCI_EVENT_IO_CAPABILITY_REQUEST if hci_stack.io_capability is set

send hci_write_simple_pairing_mode during init

use default COD of 0x007a020c and 'BTstck 11:22:33:44:55:66' as local name. allow to set both in hci_stack

untested hci cmds for sdp rfcomm query

query local supported features during HCI setup

allow for HCI_PACKET_BUFFER_SIZE override

mark Embedded API functions, add basic documentation for all of them