graemecode

// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.8.6;

import {IERC20} from "../../external/interface/IERC20.sol";

/**
 * @title ERC20Upgrader
 * @author MirrorXYZ
 * @notice This contract allows swapping a legacy ERC20 token for an upgraded one.
 */