Memoization function doesn't work cross browser

Memoize currently applies toJson to the arguments object, but that doesn't work across all browsers:

http://stackoverflow.com/questions/17546967/whats-going-on-with-json-stringifyarguments

PR forthcoming

The memoization function is likely in a file like `src/memoize.js` or within a filter utility. Examine how arguments are serialized using `toJson` or `JSON.stringify`. The Stack Overflow link explains the cross-browser inconsistency with `arguments`. Test the fix across different browsers to ensure the memoization key generation works uniformly. Check if there are existing tests for memoization to verify the change.

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