ytLending supports USDC as the base token

contracts/ytLending/Configurator.sol

@@ -200,5 +200,11 @@ contract Configurator is
     function getConfiguration(address lendingProxy) external view returns (Configuration memory) {
         return configuratorParams[lendingProxy];
     }
+
+    /**
+     * @dev 预留存储空间，用于未来升级时添加新的状态变量
+     * 50个slot = 50 * 32 bytes = 1600 bytes
+     */
+    uint256[50] private __gap;
 }