Carts micro update.

The essence of this update is the ability to connect carts in the train. This is a small update, but not bad in terms of usage. If you want to go to the mine, but you have not yet gone to the end (to get shulker), then this will be a great solution. Craft a cart with a chest, you can link them and go with things to or from the mine. You can go with your friends, because together it is much more interesting, fun and faster to dig tunnels and get valuable resources.