* add v5 * add environment * tov5 * use correct version * decode env types * fix tests * remove unnecesary checks * update fixtures * add maxEventTopics * get type defs for environment * fix conversion to v4
* add v5 * add environment * tov5 * use correct version * decode env types * fix tests * remove unnecesary checks * update fixtures * add maxEventTopics * get type defs for environment * fix conversion to v4