ADHC-1001: Extra Contract and Version Bump

contracts/IERC20.sol

@@ -1,6 +1,6 @@
-// SPDX-License-Identifier: BCOM
+// SPDX-License-Identifier: -- BCOM --
 
-pragma solidity =0.8.19;
+pragma solidity =0.8.23;
 
 interface IERC20 {
 
@@ -11,11 +11,25 @@ interface IERC20 {
         view
         returns (uint256);
 
+    function transfer(
+        address _to,
+        uint256 _value
+    )
+        external
+        returns (bool);
+
     function transferFrom(
         address _from,
         address _to,
         uint256 _value
     )
         external
         returns (bool);
+
+    function approve(
+        address _spender,
+        uint256 _value
+    )
+        external
+        returns (bool);
 }

contracts/ISwapsCallee.sol

@@ -1,6 +1,6 @@
-// SPDX-License-Identifier: BCOM
+// SPDX-License-Identifier: -- BCOM --
 
-pragma solidity =0.8.19;
+pragma solidity =0.8.23;
 
 interface ISwapsCallee {
 

contracts/ISwapsERC20.sol

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: BCOM
 
-pragma solidity =0.8.19;
+pragma solidity =0.8.23;
 
 interface ISwapsERC20 {
 

contracts/ISwapsFactory.sol

@@ -1,6 +1,6 @@
-// SPDX-License-Identifier: BCOM
+// SPDX-License-Identifier: -- BCOM --
 
-pragma solidity =0.8.19;
+pragma solidity =0.8.23;
 
 interface ISwapsFactory {
 

contracts/ISwapsPair.sol

@@ -1,6 +1,6 @@
-// SPDX-License-Identifier: BCOM
+// SPDX-License-Identifier: -- BCOM --
 
-pragma solidity =0.8.19;
+pragma solidity =0.8.23;
 
 import "./ISwapsERC20.sol";
 

contracts/ISwapsRouter.sol

@@ -1,6 +1,6 @@
-// SPDX-License-Identifier: BCOM
+// SPDX-License-Identifier: -- BCOM --
 
-pragma solidity ^0.8.19;
+pragma solidity =0.8.23;
 
 interface ISwapsRouter {
 
@@ -36,4 +36,55 @@ interface ISwapsRouter {
         returns (
             uint[] memory amounts
         );
+
+    function removeLiquidity(
+        address tokenA,
+        address tokenB,
+        uint256 liquidity,
+        uint256 amountAMin,
+        uint256 amountBMin,
+        address to,
+        uint256 deadline
+    )
+        external
+        returns (
+            uint256 amountA,
+            uint256 amountB
+        );
+
+    function getReserves(
+        address factory,
+        address tokenA,
+        address tokenB
+    )
+        external
+        view
+        returns (
+            uint112 reserveA,
+            uint112 reserveB,
+            uint32 blockTimestampLast
+        );
+
+    function FACTORY()
+        external
+        view
+        returns (address);
+
+    function quote(
+        uint256 amountA,
+        uint256 reserveA,
+        uint256 reserveB
+    )
+        external
+        pure
+        returns (uint256 amountB);
+
+    function pairFor(
+        address factory,
+        address tokenA,
+        address tokenB
+    )
+        external
+        pure
+        returns (address);
 }

contracts/IVerseFarm.sol

@@ -0,0 +1,27 @@
+// SPDX-License-Identifier: -- BCOM --
+
+pragma solidity =0.8.23;
+
+import "./ISwapsPair.sol";
+
+interface IVerseFarm {
+
+    function earned(
+        address _farmerAdders
+    )
+        external
+        view
+        returns (uint256);
+
+    function balanceOf(
+        address _farmerAdders
+    )
+        external
+        view
+        returns (uint256);
+
+    function stakeToken()
+        external
+        view
+        returns (ISwapsPair);
+}

contracts/IWETH.sol

@@ -1,6 +1,6 @@
-// SPDX-License-Identifier: BCOM
+// SPDX-License-Identifier: -- BCOM --
 
-pragma solidity =0.8.19;
+pragma solidity =0.8.23;
 
 interface IWETH {
 

contracts/LiquidityHelper.sol

@@ -1,13 +1,36 @@
-// SPDX-License-Identifier: BCOM
+// SPDX-License-Identifier: -- BCOM --
 
-pragma solidity ^0.8.19;
+pragma solidity =0.8.23;
 
 import "./IERC20.sol";
 
 contract LiquidityHelper {
 
+    uint256 constant MAX_VALUE = type(uint256).max;
+
     /**
-     * @dev Allows to execute transferFrom for a token
+     * @dev
+     * Prepares path for the swap
+     */
+    function _makePath(
+        address _tokenIn,
+        address _tokenOut
+    )
+        internal
+        pure
+        returns (address[] memory path)
+    {
+        path = new address[](2);
+
+        path[0] = _tokenIn;
+        path[1] = _tokenOut;
+
+        return path;
+    }
+
+    /**
+     * @dev
+     * Allows to execute transferFrom for a token
      */
     function _safeTransferFrom(
         address _token,
@@ -19,7 +42,7 @@ contract LiquidityHelper {
     {
         IERC20 token = IERC20(_token);
 
-        callOptionalReturn(
+        _callOptionalReturn(
             _token,
             abi.encodeWithSelector(
                 token.transferFrom.selector,
@@ -30,7 +53,7 @@ contract LiquidityHelper {
         );
     }
 
-    function callOptionalReturn(
+    function _callOptionalReturn(
         address _token,
         bytes memory _data
     )
@@ -82,7 +105,7 @@ contract LiquidityHelper {
 
     /**
      * @dev
-     *
+     * Calculates square root of the _y number
     */
     function _sqrt(
         uint256 _y