World Game Update v0.0.0.3

Another update for World Game, this time there is a bit more to do other just build stuff.

• Added "Test Entity" (can be spawned by pressing L)
• Added the Ability for the player to attack entities.
• A lot of Internal code is now setup for dealing and interacting with entities.
• Fixed Memory Leak that occurs every time a new world is generated.

Please if you find any bugs, report it. Have Fun with the new Test Entity! :)