Switch ambientglow+brightmap shader to actually use brightmap textures directly. This bumps the version requirement to 3.5.0 and makes it sorta-possible to play with software rendering without seeing "invisible pickup models".
Re-ran all textures through optipng.
All add-ons have been updated accordingly.
Added view-space effects to Enforcer and Biorifle, others will follow soon.
Added smoke particles to spent casings.
Added green smoke particles to biorifle sludge explosions.
Touched up how rockets and grenades are fired.
Fixed a VM abort when the game is loaded while there's a Redeemer blast active.
