Update 0.653 released

This update brings another visual overhaul, a new upgrade system and tightens up combat mechanics and player physics.

• Combat FX adjusted for better visiblity and damage feedback
• Levels now have randomized color schemes and improved fidelity.
• Player ship handling made more responsive
• Player weapon projectile speeds rebalanced to be more consistent and easier to aim
• 3 new enemy types added
• Enemy missiles can now be shot down mid-air
• All weapons now drop with a random power bonus
• The damage a weapon deals is affected by the level of the weapon plus the player's power level compared to the level of the enemy it hits
• Added data core pickups that allows the player to select one of 18 different upgrades
• Added armor pickups that increase the player's damage resistance
• Orbiguns now have infinite ammo but can be lost by taking damage
• Each Orbigun has 30 health