A Living Dream - build 0.0.9

Added:
- Sword
- Purple Worm enemies you can kill with your sword to give bread. (placeholder drop for now)
- Energy decreases when you generate land, eat bread to bring it back up.

Fixed:
- Level generation code. Much, MUCH cleaner now, also generates 2 blocks ahead of you now.
- Turn speed increased.

Bugs:
- If any mobs/items in ungenerated land it classes it as ‘not empty’ and doesn’t generate. Should be an easy fix, just need to re-write a few things.