v0.7

Changes:

• Added the first prototype for ships!
• Press enter to spawn a ship
• Get in the ship simply by jumping into it
• Use arrow keys to fly the ships around
• Build on it into whatever you'd like!
• Added test hammer item for breaking walls
• Added crafting menu, currently can only craft wood walls and 2 debug recipes
• Added wood plank that drops from trees
• Rewrote entirety of player planet loading and all that