Growfruit Challenge Super Fertilizer Stackable

Hello! I'm back. I always play with the Simple Living challenge so that I have to raise cows and chickens in the game to have ingredients for cooking. Whenever I clean the animal sheds though, I always end up with sacks after sacks of these Growfruit Challenge Super Fertilizers than I really need for my gardening. So, I thought of having a retail store that sells fertilizers. Imagine my disappointment when I found out later that these sacks cannot be displayed properly in a store because they are not stackable! So, I made this mod. Enjoy! P. S. I only make mods I use myself.