go test fuzz v1
[]byte("{\"type\":\"tml\",\"version\":\"1\",\"title\":3,\"children\":[{\"type\":\"grid\",\"cols\":\"3\",\"gap\":1.50},{\"type\":\"sparkline\",\"values\":\"[1,2]\"},{\"type\":\"card\",\"fold\":\"true\",\"x\":[1,{\"a\":null}]}]}")
