Packs for your back!

This is a backpack mod that adds a variety of new backpacks, some new ingredients and a new workstation.

The new crafting ingredients are:

-Cobblestone nugget: Crafted from a piece of cobblestone, can be crafted back into cobblestone.

-Decomposing plant matter: Made from 1 bonemeal in the center, 4 leaves around it and 4 wheat seeds in the corner.

-Tanned leather: Made from leather and decomposing plant matter in the tanner.

The new workstation is:

-Tanner: Crafted with 3 smooth stone slabs on the bottom row, 1 barrel in the middle and 5 cobblestone nuggets on the rest of the slots. On redstone activation it will produce 1 tanned leather if it has leather in the first slot and decomposing plant matter in the second. Its cooldown is 1 second.

The new backpacks are:

-Crude backpack: Crafted with a cobblestone nugget in the middle and 4 leather surrounding it. It has 3 slots.

-Miner's Backpack: Made with a gold block in the middle, a coal block in the top center, an iron block in the top left, a lapis block in the top right and 5 tanned leather filling out the rest of the slots. Has 12 slots for storage and 1 slot for fuel where you can put a lava bucket and receive five minutes of haste 2.

-Standard backpack: Made with a tripwire hook surrounded by 8 tanned leather. Has as many slots as a chest.

-Large backpack: Made with a standard backpack and 6 tanned leather, 3 in the bottom row, 2 in either side of the standard backpack and 1 in the top center slot. Has as many slots as a double chest.

-Freezing backpack: Made with a standard backpack surrounded by blue ice. Only has 1 input slot, where you can put your water bucket to freeze it to 1-10 packed ice and 1-10 snow blocks. Is also used for a secret achievement, have fun finding it!