Bug fixes:
       ZBX-19857 usergroup.get: dropped support for the non-working option web_gui_access
       
Bug fixes:
       ZBX-8999 configuration.export: fixed exporting of images separately from other objects
       
Bug fixes:
       ZBX-19388 graph.update: fixed method to properly change values on template graph instead of making a new inherited graph if case user has no permissions to child host or template
       
Bug fixes:
       ZBX-19388 graphprototype.update: fixed method to properly change values on template graph prototype instead of making a new inherited graph prototype if case user has no permissions to child host or template
       
Bug fixes:
       ZBX-19424 trigger.create: fixed trigger creation on PostgreSQL with host name consisting of only numbers
       
Changes:
       ZBX-3783 script.get: added strict validation of input parameters
       
Changes:
       ZBXNEXT-5271 configuration.import: implemented deleteMissing option for templateLinkage
       
Changes:
       ZBX-3783 valuemap.get: added strict validation of input parameters
       
Changes:
       ZBX-11272 alert.get: added support of two new options mediatypeid and sendto in the sortfield parameter
       
Bug fixes:
       ZBX-10861 discoveryrule.create, discoveryrule.update: changed "username" and "password" fields to optional for HTTP agent type discovery rules and using authentication
       
Bug fixes:
       ZBX-10861 httptest.create, httptest.update: changed "http_user" and "http_password" fields to optional when using authentication
       
Bug fixes:
       ZBX-10861 item.create, item.update: changed "username" and "password" fields to optional for HTTP agent type items and using authentication
       
Bug fixes:
       ZBX-10861 itemprototype.create, itemprototype.update: changed "username" and "password" fields to optional for HTTP agent type item prototypes and using authentication
       
Bug fixes:
       ZBX-14833 dservice.get: fixed "selectHosts" option to return correct hosts that are monitored by current proxy or server