Added warning when exporting a large selection as an Structure NBT file, fixes #841
Added warning when exporting a large selection as an Structure NBT file, fixes #841

Khroki/MCEdit-Unified,fhfuih/MCEdit-Unified,fhfuih/MCEdit-Unified,Khroki/MCEdit-Unified,fhfuih/MCEdit-Unified,Khroki/MCEdit-Unified