Switch to struct.Struct() Merge of 3fa47f20c4b9966cba747fb8c0cce01c8f8acd2f
Switch to struct.Struct()
Merge of 3fa47f20c4b9966cba747fb8c0cce01c8f8acd2f

Shaves around a microsecond off loading files and a bit more off saving files.
Signed-Off-By: Corbin Simpson

fwaggle/NBT,macfreek/NBT,cburschka/NBT,twoolie/NBT,devmario/NBT