add todo && smartSwap event update

contracts/DODOVendingMachine/impl/DVMFunding.sol

@@ -31,6 +31,7 @@ contract DVMFunding is DVMVault {
         }
         // case 3. normal case
         if (baseReserve > 0 && quoteReserve > 0) {
+            //TODO: (Route合约配合实现)
             uint256 baseInputRatio = DecimalMath.divFloor(baseInput, baseReserve);
             uint256 quoteInputRatio = DecimalMath.divFloor(quoteInput, quoteReserve);
             uint256 mintRatio = baseInputRatio > quoteInputRatio ? quoteInputRatio : baseInputRatio;

contracts/DODOVendingMachine/impl/DVMStorage.sol

@@ -61,6 +61,7 @@ contract DVMStorage is InitializableOwnable, ReentrancyGuard {
 
     // ============ Setting Functions ============
 
+    //TODO: owner权限问题论证
     function setLpFeeRateModel(address newLpFeeRateModel) external onlyOwner {
         _LP_FEE_RATE_MODEL_ = IFeeRateModel(newLpFeeRateModel);
     }

contracts/DODOVendingMachine/impl/DVMTrader.sol

@@ -49,6 +49,7 @@ contract DVMTrader is DVMVault {
     {
         uint256 baseInput = getBaseInput();
         uint256 mtFee;
+        //TODO:tx.origin 的潜在风险,直接写to
         (receiveQuoteAmount, mtFee) = querySellBase(tx.origin, baseInput);
         _transferQuoteOut(to, receiveQuoteAmount);
         _transferQuoteOut(_MAINTAINER_, mtFee);