[ZBX-3407] fixed NVPS query to not fail on DB2 (Krists) [ZBX-8608] added support of IP masks for action conditions (Sasha)[ZBX-8151] fixed XXE vulnerability on XML import using obsolete libxml versions; thanks to pnig0s@Freebuf for the report (Andrejs) [ZBX-8343] fixed a bug in binary heap that could cause a slightly inconsistent ordering of elements in the queue (asaveljevs) [ZBX-8198] decreased verbosity of Windows agent with DebugLevel=4 (Nikolaj) [ZBX-7930] improved SQL performance and execution time in Maintenance page (Ivo)
