Zabbix

A.F....... [ZBX-18998] rewrited API main object validation

* commit 'c2daf40eac45d78d189f4d4df7b6ea0cbf789cc8':
  .......... [ZBX-18998] made additional parameters supported
  .......... [ZBX-18998] made the params parameter required
  .......... [ZBX-18998] changed changelog entity
  .......... [ZBX-18998] added two test to json rpc api test
  .......... [ZBX-18998] merged CLocalApiClientTest with API tests
  .......... [ZBX-18998] fixed unit tests
  A......... [ZBX-18998] added type hinting for $params
  A......... [ZBX-18998] fixed multiple issues with JSON RPC calls
  A......... [ZBX-18998] added support of null by the "auth" parameter
  .......... [ZBX-18998] added changelog entity
  .......... [ZBX-18998] fixed API test; add new test
  A.F....... [ZBX-18998] rewrited API main object validation; added unit test for new type API_MIXED