Update to v13.75- random fixes + TVR add-on update

-Lengthened the lifespan of large mushroom clouds.

-Updated kick sprites.

-Added audio and visual indication for speed boost kick.

-Reworked hadron particles, they now do most damage in detonation rather than impact

in order to better fit the grenade/grenade equivalent job.

-Added bonus intro animations (turned off by default, activate in options menu)

-Updated TVR_Extra:

--Added subtle atmospheric fog to most maps.

--Added unique skies to a few maps.

--Updated the final boss weapon removal code.

--Fixed Chaos' halo not despawning upon death.

--Made Chaos slightly harder, still a joke though.

--A berserk now spawns with Chaos to make things less of a slog.

--Added rain ambience.

--Added custom intermission text.