TraceId to string from int

The TraceId returned can potentially contain the string 0_0

Author: BenKnigge

response.go

@@ -60,7 +60,7 @@ type InternalTx struct {
 	Type            string  `json:"type"`
 	Gas             int     `json:"gas,string"`
 	GasUsed         int     `json:"gasUsed,string"`
-	TraceID         int     `json:"traceId,string"`
+	TraceID         string     `json:"traceId"`
 	IsError         int     `json:"isError,string"`
 	ErrCode         string  `json:"errCode"`
 }