Zabbix API 2.4 supported
Merge branch 'petrisor-lacatus-master' into zabbix2.4
Version 2.4 updates
Some fixes
Fix screen default rowspan and colspan, remove array_flag method
Update travis.yml to use latest 2.1 ruby
Release 2.4.1 version
Merge branch 'master' into zabbix2.4
Bump to version 2.4.2
Zabbix 2.4 now is main supported branch