* Reduce explosion airtight cache memory usage
This means you can happily add explosion prototypes again
New approach has the tolerance value data in a shared storage with reference counting.
* Oops fix index removal
* Remove debug code and fix merge conflicts
* Also address my other review
* Oh it's in two places lmao
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Co-authored-by: Princess Cheeseballs <66055347+Pronana@users.noreply.github.com>
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