Revert get_3d to deprecated get3d for 0.4.x compatibility

SmallJoker

2018-08-04 9b40d02fbd9e8c39c5c64cc7de89a7fe45382f04

 technic/tools/init.lua

@@ -13,4 +13,11 @@
dofile(path.."/chainsaw.lua")
dofile(path.."/tree_tap.lua")
dofile(path.."/sonic_screwdriver.lua")
dofile(path.."/prospector.lua")
dofile(path.."/vacuum.lua")

if minetest.get_modpath("screwdriver") then
   -- compatibility alias
   minetest.register_alias("technic:screwdriver", "screwdriver:screwdriver")
end