月初alpha1刚出，今天beta1出来了。改进东西不是很多。

• [ZBXNEXT-1791] added evaluation of logical expressions with unsupported items in trigger expressions and calculated items
• [ZBXNEXT-2877] added datacenter name to vmware hypervisors and virtual machines
• [ZBXNEXT-1262] added support of nested host groups
• [ZBXNEXT-1791] enabled evaluation of nodata() and time-based functions for not supported items in trigger expressions and calculated items
• [ZBX-1357] updated Chinese (China), Czech, English (United States), French, Georgian, German, Italian, Japanese, Korean, Polish, Portuguese (Brazil), Russian, Slovak, Spanish, Turkish, Ukrainian translations; thanks to Zabbix translators

• [ZBX-11109] fixed processing of parameter HousekeepingFrequency=0 in proxy
• [ZBX-11105] fixed compiler warnings regarding unused function parameters
• [ZBX-11099] reduced configuration cache lock time after host maintenance ends