With the new version some OpenWSN modules are optional: - openwsn_cjoin (and therefore opewnsn_coap) - openwsn_6lo_fragmentation - openwsn_icmpv6echo - openwsn_crypto - openwsn_udp (optional but kept as default) New optional modules have been added: - openwsn_iee802154e_security (link layer security) - openwsn_adaptive_msf (MSF dynamic slot allocation) Openvisualizer needs to be updated to be compatible with the new version.