annotation && v2proxy add gasreturn and trade incentive && proxyV2 incentive test

contracts/Factory/CrowdPoolingFactory.sol

@@ -15,6 +15,12 @@ import {SafeMath} from "../lib/SafeMath.sol";
 import {IERC20} from "../intf/IERC20.sol";
 import {DecimalMath} from "../lib/DecimalMath.sol";
 
+/**
+ * @title CrowdPoolingFacotry
+ * @author DODO Breeder
+ *
+ * @notice Create And Register CP Pools 
+ */
 contract CrowdPoolingFactory is InitializableOwnable {
     using SafeMath for uint256;
     // ============ Templates ============
@@ -27,6 +33,7 @@ contract CrowdPoolingFactory is InitializableOwnable {
     address public _CP_TEMPLATE_;
 
     // ============ Settings =============
+
     uint256 public _CAP_RATIO_ = 50; 
     uint256 public _FREEZE_DURATION_ =  30 days;
     uint256 public _CALM_DURATION_ = 0;
@@ -43,6 +50,7 @@ contract CrowdPoolingFactory is InitializableOwnable {
     mapping(address => address[]) public _USER_REGISTRY_;
 
     // ============ modifiers ===========
+
     modifier valueCheck(
         address cpAddress,
         address baseToken,
@@ -69,8 +77,6 @@ contract CrowdPoolingFactory is InitializableOwnable {
         address cp
     );
 
-    // ============ Functions ============
-
     constructor(
         address cloneFactory,
         address cpTemplate,
@@ -87,6 +93,8 @@ contract CrowdPoolingFactory is InitializableOwnable {
         _DEFAULT_PERMISSION_MANAGER_ = defaultPermissionManager;
     }
 
+    // ============ Functions ============
+
     function createCrowdPooling() external returns (address newCrowdPooling) {
         newCrowdPooling = ICloneFactory(_CLONE_FACTORY_).clone(_CP_TEMPLATE_);
     }
@@ -149,6 +157,7 @@ contract CrowdPoolingFactory is InitializableOwnable {
     }
 
     // ============ Owner Functions ============
+    
     function updateCPTemplate(address _newCPTemplate) external onlyOwner {
         _CP_TEMPLATE_ = _newCPTemplate;
     }

contracts/Factory/DPPFactory.sol

@@ -14,6 +14,12 @@ import {IFeeRateModel} from "../lib/FeeRateModel.sol";
 import {IDPP} from "../DODOPrivatePool/intf/IDPP.sol";
 import {IDPPAdmin} from "../DODOPrivatePool/intf/IDPPAdmin.sol";
 
+/**
+ * @title DODO PrivatePool Factory
+ * @author DODO Breeder
+ *
+ * @notice Create And Register DPP Pools 
+ */
 contract DPPFactory is InitializableOwnable {
     // ============ Templates ============
 
@@ -43,8 +49,6 @@ contract DPPFactory is InitializableOwnable {
 
     event RemoveDPP(address dpp);
 
-    // ============ Functions ============
-
     constructor(
         address cloneFactory,
         address dppTemplate,
@@ -61,6 +65,8 @@ contract DPPFactory is InitializableOwnable {
         _DODO_APPROVE_ = dodoApprove;
     }
 
+    // ============ Functions ============
+
     function createDODOPrivatePool() external returns (address newPrivatePool) {
         newPrivatePool = ICloneFactory(_CLONE_FACTORY_).clone(_DPP_TEMPLATE_);
     }

contracts/Factory/DVMFactory.sol

@@ -22,6 +22,13 @@ interface IDVMFactory {
     ) external returns (address newVendingMachine);
 }
 
+
+/**
+ * @title DODO VendingMachine Factory
+ * @author DODO Breeder
+ *
+ * @notice Create And Register DVM Pools 
+ */
 contract DVMFactory is InitializableOwnable {
     // ============ Templates ============
 

contracts/Factory/ERC20Factory.sol

@@ -12,6 +12,13 @@ import {ICloneFactory} from "../lib/CloneFactory.sol";
 import {InitializableERC20} from "../external/ERC20/InitializableERC20.sol";
 import {InitializableMintableERC20} from "../external/ERC20/InitializableMintableERC20.sol";
 
+
+/**
+ * @title DODO ERC20Factory
+ * @author DODO Breeder
+ *
+ * @notice Help user to create erc20 token
+ */
 contract ERC20Factory {
     // ============ Templates ============