Update Abilities.js
Update Abilities.js

Added a bunch of abilities. How would I do an ability like Thick Fat that reduces damage from two types (Fire and Ice) ? Also for Heatproof, the ability is supposed to reduce damage from fire types with a 0.5 multiplier, essentially. If they would have been super effective, they're now neutral. I'm 99% sure the "It's super effective!" message still displays though. I probably put it in wrong, but I can fix it if you tell me how.
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