Fix algo. for new Agricraft version

src/client/models/crafting/crafting_step.coffee

@@ -68,6 +68,6 @@ module.exports = class CraftingStep
         @_inventory = new SimpleInventory
         for stack in @_recipe.input
             qualifiedSlug = @_modPack.qualifySlug stack.itemSlug
-            required = @_recipe.getQuantityRequired(stack.itemSlug) - @_recipe.getQuantityProduced(stack.itemSlug)
+            required = @_recipe.getQuantityRequired(stack.itemSlug)
             required = if required > 0 then required * @multiplier else 1
             @_inventory.add qualifiedSlug, required

src/client/models/game/mod_version.coffee

@@ -152,7 +152,8 @@ module.exports = class ModVersion extends BaseModel
             if recipe.itemSlug.matches itemSlug
                 primaryRecipes.push recipe
             else if recipe.produces itemSlug
-                otherRecipes.push recipe
+                if not recipe.requires itemSlug
+                    otherRecipes.push recipe
 
         for recipe in primaryRecipes
             result.push recipe

src/client/models/game/recipe.coffee

@@ -111,7 +111,7 @@ module.exports = class Recipe extends BaseModel
         return result
 
     isPassThroughFor: (itemSlug)->
-        return @getQuantityProduced(itemSlug) is @getQuantityRequired(itemSlug)
+        return @getQuantityProduced(itemSlug) > 0 and @getQuantityRequired(itemSlug) > 0
 
     produces: (itemSlug)->
         if not @_produces?