Better mining.

These changes are mostly server side and shouldn't break compatibility with 0.14.0 clients.

• Allowed players to be captured in containment orbs
• Added automatic pipe configuration
• Made pipe removal more specific
• Farmland can be untilled with a pickaxe

Initial work on the shadow realm.

• Added moth character

• Added millstones

• Overhauled landfills

• Saplings can be planted by dragging
• Added containment orbs
• Added the ability to press the arrow keys to change the player's faced direction without moving
• Fixed immature trees giving resources when chopped
• Added yeast

• Added carrots, potatoes and pumpkins

• Added chairacter

• Fixed chicken horizontal directions
• Added corn
• Added tile upper portions