The "next_key" field is missing in the GetTable rows API response

[cream-cheeze]

The next_key field is missing in the GetTable rows API response. It is needed to make next requests if "more" = true.

type GetTableRowsResp struct {
	More bool            `json:"more"`
	Rows json.RawMessage `json:"rows"` // defer loading, as it depends on `JSON` being true/false.
}

Original eosio v1 API returns this field.

[ygcool]

+1

[alexandru-calinoiu]

Stumbled uppon this and added a fix here #211