[Bug/Feature] Amanitin Rework

[Kubius]

Modifies the amanitin proc, adding an additional toxin roll when the chemical depletes and moving the main RNG into the accumulation. This fixes a bug where amanitin would deal no damage when added at a rate slower than or equal to the depletion rate (most commonly occurring as a result of digestion) and makes its damage more consistent overall.

https://github.com/goonstation/goonstati...n?expand=1

[ZeWaka]

++

[Readster]

Merging this now