Terrariums And Cages

Adds terrariums, cages, aquariums and lavaquariums to minecraft that can house mobs.

Use the terrarium key to toggle the sides of any of the terrariums. External non-solid (toggled off) walls will only be outlined when holding the key. Terrariums will merge with any of the different types of terrariums next to each other. Terrariums work better when at least 3x3x1.
To place a block or any decoration inside an enclosure, remove the enclosure block, place the block, and toggle the surrounding walls off with the enclosure key.

Originally part of my other mod, snekcraft.