Alloy furnace: Accept only unique ItemStacks from tubes (#523)

Serhiy Zahoriya

2020-01-11 1a45ad19d4fa627e147bd385665e37942f6147fb

 technic/machines/register/extractor_recipes.lua

@@ -15,6 +15,7 @@
   -- register recipes with the same crafting ratios as `dye` provides
   local dye_recipes = {
      {"technic:coal_dust",                 "dye:black 2"},
      {"default:blueberries",               "dye:violet 2"},
      {"default:grass_1",                   "dye:green 1"},
      {"default:dry_shrub",                 "dye:brown 1"},
      {"default:junglegrass",               "dye:green 2"},