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Functions in SafeMath contract overloaded to accept custom error messages (#1828) · 5d34dbec
* Imporvement: functions in SafeMath contract overloaded to accept custom error messages. * CHANGELOG updated, custom error messages added to ERC20, ERC721 and ERC777 for subtraction related exceptions. * SafeMath overloads for 'add' and 'mul' removed. * Error messages modified. * Update CHANGELOG.md
Aram Elchyan authored
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