merge upstream

building_blocks/alias.lua

building_blocks/depends.txt

building_blocks/init.lua

building_blocks/node_stairs.lua

building_blocks/others.lua

building_blocks/recipes.lua

building_blocks/textures/building_blocks_marble.png

computer/computers.lua

computer/depends.txt

computer/init.lua

computer/miscitems.lua

computer/models/computer_3dprinter_bedflinger.obj

computer/printers.lua

computer/tetris.lua

computer/textures/computer_3dprinter_bedflinger.png

computer/textures/computer_3dprinter_bedflinger_inv.png

computer/textures/computer_3dprinter_filament.png

copyright.txt

fake_fire/depends.txt

fake_fire/init.lua