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Nicolás Venturo bd0778461d Add EnumerableMap, refactor ERC721 (#2160) ... * Implement AddressSet in terms of a generic Set * Add Uint256Set * Add EnumerableMap * Fix wording on EnumerableSet docs and tests * Refactor ERC721 using EnumerableSet and EnumerableMap * Fix tests * Fix linter error * Gas optimization for EnumerableMap * Gas optimization for EnumerableSet * Remove often not-taken if from Enumerable data structures * Fix failing test * Gas optimization for EnumerableMap * Fix linter errors * Add comment for clarification * Improve test naming * Rename EnumerableMap.add to set * Add overload for EnumerableMap.get with custom error message * Improve Enumerable docs * Rename Uint256Set to UintSet * Add changelog entry		5 years ago
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ERC20	Bundle ERC20Detailed (#2161)	5 years ago
ERC721	Add EnumerableMap, refactor ERC721 (#2160)	5 years ago
ERC777	Make ERC777 operator the caller (#2134)	5 years ago