Export for 3d Printing

Allow us to export the map to a 3d printer format such as the OBJ format. This would allow us to print our maps for games, resizing it to fit on our bed and such could be a nice feature so it is built into sections. Having the option to add a star or square seating section for mobs or items so they can lock down to the print, but being able to print most of the objects separately to be able to move them would be great.