Tank64 balance pass: what changed for weapons and hulls

Weapon and hull balance pass. All changes are already live. Laser: - Increased damage - Shorter charge time before the shot Jet: - Increased durability - Health regen while standing still now starts sooner - Smoother acceleration Reaper: - Reduced durability - Lifesteal healing is now rate limited Phantom: - Invulnerability while driving through an enemy tank replaced with reduced damage taken Split: - Fires a second shell when the star bonus is active Spark and Ram are unchanged.