Added functionality to fire the tank's weapon.
Removed delta from fireWeapon.
Tank is now drawn using drawCentered. (?)
Changed the name of the class TestProjectile to DefaultProjectile.
Added an image of a bullet.
Abstract weapon now has a method that returns a new projectile object.
Set the CurrentWeapon of DefaultTank to DefaultWeapon.
Added a very simple but unfinished way of displaying each projectile.
Changed some calculations in the fireWeapon method.
Changed of IDs work. Entitys now generate a ID...

..upon creation.
Optimized bullet rendering.
Added getTurretCenter() to AbstractTurret.
Turret now also generates ID.
Projectiles are now emitted at the turrets nozzle.
Merged dev to PewPew
Proper merge, hopefully..
Added temporary code that removes offscreen..

..projectiles.
Turrets now has a rate of fire.
Added boolean active to Entity.
Only active projectiles are updated and rendered.