MyCut

The fundContest function in ContestManager and the _transferReward and closePot functions in Pot use standard IERC20.transfer and IERC20.transferFrom methods without verifying their boolean return values. Some ERC20 tokens do not revert on failure but instead return false, which would cause the contract to silently fail to transfer funds while still accounting for them. Other tokens do not return a boolean at all, which would cause the calls to revert. OpenZeppelin's SafeERC20 library should be used to handle these non-standard implementations safely.