26 Upgrade notes for 5.0.16


Zabbix agent 2 items proc.num, proc.cpu.utilization, proc.mem have been updated to use the latest functions introduced in Go 1.16 and thus provide better performance. Go version 1.16 or newer is now required for compiling Zabbix agent 2 to ensure correct work of these items and avoid an issue observed when compiling with older Go versions.