various bug fixes
Laser+slow light prop+crouch= all but one laser stays in original position
CPT rewind and gun: correctly put you back into a crouch position
Higgs + rail gun allows movement
blocks don't linger at the bottom of portals anymore
squirrel cage - move even faster, but take 5% more harm
tech: iridium-192 - explosions are radioactive, +80% damage, spread over 4 seconds