Hi,
I've noticed the degraded performance of the method wkt.Unmarshal since v.0.9.1
Here is the comparison
v.0.9.0
BenchmarkUnmarshall_V90-10
BenchmarkUnmarshall_V90-10 55581 21352 ns/op 11384 B/op 101 allocs/op
v.0.9.1
BenchmarkUnmarshall_V91-10
BenchmarkUnmarshall_V91-10 9172 121703 ns/op 17722 B/op 180 allocs/op