The 4.1.3 is bug fix release only.
IM-1159 - Can't generate Resource report .csv download
IM-1170 - Update copyright text
IM-1183 - Memory allocation exhaustion on large PowerDNS import
IM-1197 - IPAM view aggregate tree not restricting to top block
IM-1201 - IPAM gadget not displaying addresses
IM-1204 - Javascript error when splitting blocks
IM-1205 - IPAM Gadget browse assign does not have correct IP type set
IM-1207 - IPAM Gadget RIR integration broken