Upgrade Revamp.
Added “+”, “x” and “set” options to upgrades.
Changed projectiles to load from owner variables.
Added projectile upgrades.
Changed upgrade text font size down to 50.
New enemies now get upgrades applied
UpgradeManager now needs to be passed to EnemyManager
Merge remote-tracking branch 'origin/0.1' into 0.1
Made Projectile Damage load from config.
Adjusted ProjectileDamage and EnemyMaxHealth.