Using "cancels" makes traits mutually exclusive at character creation #36198
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Summary
SUMMARY: Mods "Makes Made Of Sugar trait exclusive with appropriate traits"
Purpose of change
The "cancels" entry was only working one way: If A cancels B you can't take B and then take A but you can take A and then B.
Now if A cancels B if you have A you can't take B, and if you have B you can't take A.
Use this to make Made of Sugar incompatible with mutating traits, thirst traits, and food traits.
Describe the solution
Add a check to look through my_mutation and then through each "cancels" entry to search for the candidate mutation
Describe alternatives you've considered
Testing
Load the game
![image](https://user-images.githubusercontent.com/41293484/71037008-1f3cc300-211f-11ea-9a60-43d0ebfe02fd.png)
Additional context
The most impactfull thing here is the change to how "cancels" works but this is also a sweet cataclysm fix so I don't which of these aspects should show up in the summary.