llsec: Compromise-resilient 802.15.4 security
apkes: Avoid nonce reuse in HELLOACKs, send authenticated short address
in ACKs
node-id: Function for appending extra config data
apkes: Fully pairwise keys scheme
apkes: Schedule erasure of master key within leap.c (better cohesion)
apkes: Trickle-based broadcasting of HELLOs
apkes: Automatic removal of disappeared neighbors