Merge pull request #719 from chyroc/fix-merge-event-title-change

fix: add title change to merge-event

event_types.go

@@ -595,6 +595,10 @@ type MergeEvent struct {
 			Previous int `json:"previous"`
 			Current  int `json:"current"`
 		} `json:"updated_by_id"`
+		Title struct {
+			Previous string `json:"previous"`
+			Current  string `json:"current"`
+		} `json:"title"`
 	} `json:"changes"`
 }