Big butt ********!

This addon includes three mutations:

A) Big butt ********:
- There's only Boomettes and Tanks. At least one Tank is forced to spawn, normally when passing first half of the map.
- Variable respawn according to the number of survivors. (*)
- Boomettes are much tougher and explode upon impact with a survivor.
- The boomettes' explosion deals a lot of damage to survivors, destroys propane tanks or gas cans, and displaces objects, including cars or containers.
- Apart from the basic Boomettes, variants can also appear: Very explosive, Very fast, Flying, Acid, Very hot, Paralyzing, Magnetic, Healing, Jumping and the Choco-surprise!.
- Much higher respawn in the ending events (the endings aren't very intense, anyway).
- Explosive ammo are replaced with incendiary ammo.
- There is no incapacitation.
- Boomettes can spawn anywhere.
- Vomit jars destroy Boomettes if they hit them directly or if a Tank covered in vomit passes near them, and also damages them if they pass through vomit-soaked floors. Homemade grenades take less time to explode.
- The first bile that falls on the survivors slow them down, much more if they are of the Paralyzing variant, or even causes residual damage if it comes from the Acid variant.

B) Big butt ******** united: Same as above, but with 7 surviving bots. Requires the "United we Stand" or "Rayman1103's Mutation" addon to be installed and active:
- The respawn is more aggressive, due to (*).

C) Big butt ******** alone: Same as Big butt ******** but for 1 player without surviving bots:
- The respawn is less aggressive, due to (*).
- Defibrillators are replaced by pills.
- The Boomettes will not appear while there is a Tank alive, except in the final events or after having covered 80% of the map.
- Gas cans are not destroyed by the Boomettes explosion in scavenge endings.
- Boomettes always spawn in front of the survivor.

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It may need some balance, so feel free to contribute with your suggestions.