Unfix compiler version except for top level contracts

2018-12-20 11:37:29 -08:00
parent 12177270df
commit 9b521aeef5
76 changed files with 76 additions and 75 deletions
--- a/contracts/.solhint.json
+++ b/contracts/.solhint.json
@@ -5,6 +5,7 @@
        "avoid-tx-origin": "warn",
        "bracket-align": false,
        "code-complexity": false,
+        "compiler-fixed": false,
        "const-name-snakecase": "error",
        "expression-indent": "error",
        "function-max-lines": false,
--- a/contracts/extensions/contracts/BalanceThresholdFilter/MixinBalanceThresholdFilterCore.sol
+++ b/contracts/extensions/contracts/BalanceThresholdFilter/MixinBalanceThresholdFilterCore.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-libs/contracts/libs/LibExchangeSelectors.sol";
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
--- a/contracts/extensions/contracts/BalanceThresholdFilter/MixinExchangeCalldata.sol
+++ b/contracts/extensions/contracts/BalanceThresholdFilter/MixinExchangeCalldata.sol
@@ -17,7 +17,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "./mixins/MExchangeCalldata.sol";
 import "@0x/contracts-libs/contracts/libs/LibAddressArray.sol";
--- a/contracts/extensions/contracts/BalanceThresholdFilter/interfaces/IBalanceThresholdFilterCore.sol
+++ b/contracts/extensions/contracts/BalanceThresholdFilter/interfaces/IBalanceThresholdFilterCore.sol
@@ -17,7 +17,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract IBalanceThresholdFilterCore {
--- a/contracts/extensions/contracts/BalanceThresholdFilter/interfaces/IThresholdAsset.sol
+++ b/contracts/extensions/contracts/BalanceThresholdFilter/interfaces/IThresholdAsset.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract IThresholdAsset {
--- a/contracts/extensions/contracts/BalanceThresholdFilter/mixins/MBalanceThresholdFilterCore.sol
+++ b/contracts/extensions/contracts/BalanceThresholdFilter/mixins/MBalanceThresholdFilterCore.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "../interfaces/IThresholdAsset.sol";
--- a/contracts/extensions/contracts/BalanceThresholdFilter/mixins/MExchangeCalldata.sol
+++ b/contracts/extensions/contracts/BalanceThresholdFilter/mixins/MExchangeCalldata.sol
@@ -17,7 +17,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract MExchangeCalldata {
--- a/contracts/extensions/contracts/Forwarder/MixinAssets.sol
+++ b/contracts/extensions/contracts/Forwarder/MixinAssets.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
 import "@0x/contracts-utils/contracts/utils/Ownable/Ownable.sol";
--- a/contracts/extensions/contracts/Forwarder/MixinExchangeWrapper.sol
+++ b/contracts/extensions/contracts/Forwarder/MixinExchangeWrapper.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "./libs/LibConstants.sol";
--- a/contracts/extensions/contracts/Forwarder/MixinForwarderCore.sol
+++ b/contracts/extensions/contracts/Forwarder/MixinForwarderCore.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "./libs/LibConstants.sol";
--- a/contracts/extensions/contracts/Forwarder/MixinWeth.sol
+++ b/contracts/extensions/contracts/Forwarder/MixinWeth.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-libs/contracts/libs/LibMath.sol";
 import "./libs/LibConstants.sol";
--- a/contracts/extensions/contracts/Forwarder/interfaces/IAssets.sol
+++ b/contracts/extensions/contracts/Forwarder/interfaces/IAssets.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract IAssets {
--- a/contracts/extensions/contracts/Forwarder/interfaces/IForwarder.sol
+++ b/contracts/extensions/contracts/Forwarder/interfaces/IForwarder.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "./IForwarderCore.sol";
--- a/contracts/extensions/contracts/Forwarder/interfaces/IForwarderCore.sol
+++ b/contracts/extensions/contracts/Forwarder/interfaces/IForwarderCore.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
--- a/contracts/extensions/contracts/Forwarder/libs/LibConstants.sol
+++ b/contracts/extensions/contracts/Forwarder/libs/LibConstants.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
 import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
--- a/contracts/extensions/contracts/Forwarder/libs/LibForwarderErrors.sol
+++ b/contracts/extensions/contracts/Forwarder/libs/LibForwarderErrors.sol
@@ -17,7 +17,7 @@
 */

 // solhint-disable
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 /// This contract is intended to serve as a reference, but is not actually used for efficiency reasons.
--- a/contracts/extensions/contracts/Forwarder/mixins/MAssets.sol
+++ b/contracts/extensions/contracts/Forwarder/mixins/MAssets.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "../interfaces/IAssets.sol";

--- a/contracts/extensions/contracts/Forwarder/mixins/MExchangeWrapper.sol
+++ b/contracts/extensions/contracts/Forwarder/mixins/MExchangeWrapper.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
--- a/contracts/extensions/contracts/Forwarder/mixins/MWeth.sol
+++ b/contracts/extensions/contracts/Forwarder/mixins/MWeth.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract MWeth {
--- a/contracts/extensions/contracts/OrderMatcher/MixinAssets.sol
+++ b/contracts/extensions/contracts/OrderMatcher/MixinAssets.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
 import "@0x/contracts-utils/contracts/utils/Ownable/Ownable.sol";
--- a/contracts/extensions/contracts/OrderMatcher/MixinMatchOrders.sol
+++ b/contracts/extensions/contracts/OrderMatcher/MixinMatchOrders.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "./libs/LibConstants.sol";
--- a/contracts/extensions/contracts/OrderMatcher/interfaces/IAssets.sol
+++ b/contracts/extensions/contracts/OrderMatcher/interfaces/IAssets.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract IAssets {
--- a/contracts/extensions/contracts/OrderMatcher/interfaces/IMatchOrders.sol
+++ b/contracts/extensions/contracts/OrderMatcher/interfaces/IMatchOrders.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
--- a/contracts/extensions/contracts/OrderMatcher/interfaces/IOrderMatcher.sol
+++ b/contracts/extensions/contracts/OrderMatcher/interfaces/IOrderMatcher.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contract-utils/contracts/utils/Ownable/IOwnable.sol";
 import "./IMatchOrders.sol";
--- a/contracts/extensions/contracts/OrderMatcher/libs/LibConstants.sol
+++ b/contracts/extensions/contracts/OrderMatcher/libs/LibConstants.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";

--- a/contracts/extensions/contracts/OrderMatcher/mixins/MAssets.sol
+++ b/contracts/extensions/contracts/OrderMatcher/mixins/MAssets.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "../interfaces/IAssets.sol";

--- a/contracts/interfaces/contracts/protocol/AssetProxy/IAssetData.sol
+++ b/contracts/interfaces/contracts/protocol/AssetProxy/IAssetData.sol
@@ -17,7 +17,7 @@
 */

 // solhint-disable
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;


--- a/contracts/interfaces/contracts/protocol/AssetProxy/IAssetProxy.sol
+++ b/contracts/interfaces/contracts/protocol/AssetProxy/IAssetProxy.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "./IAuthorizable.sol";

--- a/contracts/interfaces/contracts/protocol/AssetProxy/IAuthorizable.sol
+++ b/contracts/interfaces/contracts/protocol/AssetProxy/IAuthorizable.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-utils/contracts/utils/Ownable/IOwnable.sol";

--- a/contracts/interfaces/contracts/protocol/Exchange/IAssetProxyDispatcher.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IAssetProxyDispatcher.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract IAssetProxyDispatcher {
--- a/contracts/interfaces/contracts/protocol/Exchange/IExchange.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IExchange.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "./IExchangeCore.sol";
--- a/contracts/interfaces/contracts/protocol/Exchange/IExchangeCore.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IExchangeCore.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
--- a/contracts/interfaces/contracts/protocol/Exchange/IMatchOrders.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IMatchOrders.sol
@@ -15,7 +15,7 @@
  limitations under the License.

 */
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
--- a/contracts/interfaces/contracts/protocol/Exchange/ISignatureValidator.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/ISignatureValidator.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract ISignatureValidator {
--- a/contracts/interfaces/contracts/protocol/Exchange/ITransactions.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/ITransactions.sol
@@ -15,7 +15,7 @@
  limitations under the License.

 */
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract ITransactions {
--- a/contracts/interfaces/contracts/protocol/Exchange/IValidator.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IValidator.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract IValidator {
--- a/contracts/interfaces/contracts/protocol/Exchange/IWallet.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IWallet.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract IWallet {
--- a/contracts/interfaces/contracts/protocol/Exchange/IWrapperFunctions.sol
+++ b/contracts/interfaces/contracts/protocol/Exchange/IWrapperFunctions.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
--- a/contracts/libs/contracts/libs/LibAbiEncoder.sol
+++ b/contracts/libs/contracts/libs/LibAbiEncoder.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "./LibOrder.sol";
--- a/contracts/libs/contracts/libs/LibAddressArray.sol
+++ b/contracts/libs/contracts/libs/LibAddressArray.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";

--- a/contracts/libs/contracts/libs/LibAssetProxyErrors.sol
+++ b/contracts/libs/contracts/libs/LibAssetProxyErrors.sol
@@ -17,7 +17,7 @@
 */

 // solhint-disable
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 /// @dev This contract documents the revert reasons used in the AssetProxy contracts.
--- a/contracts/libs/contracts/libs/LibConstants.sol
+++ b/contracts/libs/contracts/libs/LibConstants.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 // solhint-disable max-line-length
--- a/contracts/libs/contracts/libs/LibEIP712.sol
+++ b/contracts/libs/contracts/libs/LibEIP712.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract LibEIP712 {
--- a/contracts/libs/contracts/libs/LibExchangeErrors.sol
+++ b/contracts/libs/contracts/libs/LibExchangeErrors.sol
@@ -17,7 +17,7 @@
 */

 // solhint-disable
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 /// @dev This contract documents the revert reasons used in the Exchange contract.
--- a/contracts/libs/contracts/libs/LibExchangeSelectors.sol
+++ b/contracts/libs/contracts/libs/LibExchangeSelectors.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract LibExchangeSelectors {
--- a/contracts/libs/contracts/libs/LibFillResults.sol
+++ b/contracts/libs/contracts/libs/LibFillResults.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-utils/contracts/utils/SafeMath/SafeMath.sol";

--- a/contracts/libs/contracts/libs/LibMath.sol
+++ b/contracts/libs/contracts/libs/LibMath.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-utils/contracts/utils/SafeMath/SafeMath.sol";

--- a/contracts/libs/contracts/libs/LibOrder.sol
+++ b/contracts/libs/contracts/libs/LibOrder.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "./LibEIP712.sol";

--- a/contracts/protocol/contracts/protocol/AssetProxy/MixinAuthorizable.sol
+++ b/contracts/protocol/contracts/protocol/AssetProxy/MixinAuthorizable.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-utils/contracts/utils/Ownable/Ownable.sol";
 import "./mixins/MAuthorizable.sol";
--- a/contracts/protocol/contracts/protocol/AssetProxy/mixins/MAuthorizable.sol
+++ b/contracts/protocol/contracts/protocol/AssetProxy/mixins/MAuthorizable.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-interfaces/contracts/protocol/AssetProxy/IAuthorizable.sol";

--- a/contracts/protocol/contracts/protocol/Exchange/MixinAssetProxyDispatcher.sol
+++ b/contracts/protocol/contracts/protocol/Exchange/MixinAssetProxyDispatcher.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-utils/contracts/utils/Ownable/Ownable.sol";
 import "./mixins/MAssetProxyDispatcher.sol";
--- a/contracts/protocol/contracts/protocol/Exchange/MixinExchangeCore.sol
+++ b/contracts/protocol/contracts/protocol/Exchange/MixinExchangeCore.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "@0x/contracts-utils/contracts/utils/ReentrancyGuard/ReentrancyGuard.sol";
--- a/contracts/protocol/contracts/protocol/Exchange/MixinMatchOrders.sol
+++ b/contracts/protocol/contracts/protocol/Exchange/MixinMatchOrders.sol
@@ -11,7 +11,7 @@
  limitations under the License.
 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "@0x/contracts-utils/contracts/utils/ReentrancyGuard/ReentrancyGuard.sol";
--- a/contracts/protocol/contracts/protocol/Exchange/MixinSignatureValidator.sol
+++ b/contracts/protocol/contracts/protocol/Exchange/MixinSignatureValidator.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
 import "@0x/contracts-utils/contracts/utils/ReentrancyGuard/ReentrancyGuard.sol";
--- a/contracts/protocol/contracts/protocol/Exchange/MixinTransactions.sol
+++ b/contracts/protocol/contracts/protocol/Exchange/MixinTransactions.sol
@@ -15,7 +15,7 @@
  limitations under the License.

 */
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-libs/contracts/libs/LibExchangeErrors.sol";
 import "./mixins/MSignatureValidator.sol";
--- a/contracts/protocol/contracts/protocol/Exchange/MixinWrapperFunctions.sol
+++ b/contracts/protocol/contracts/protocol/Exchange/MixinWrapperFunctions.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "@0x/contracts-utils/contracts/utils/ReentrancyGuard/ReentrancyGuard.sol";
--- a/contracts/protocol/contracts/protocol/Exchange/mixins/MAssetProxyDispatcher.sol
+++ b/contracts/protocol/contracts/protocol/Exchange/mixins/MAssetProxyDispatcher.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-interfaces/contracts/protocol/Exchange/IAssetProxyDispatcher.sol";

--- a/contracts/protocol/contracts/protocol/Exchange/mixins/MExchangeCore.sol
+++ b/contracts/protocol/contracts/protocol/Exchange/mixins/MExchangeCore.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
--- a/contracts/protocol/contracts/protocol/Exchange/mixins/MMatchOrders.sol
+++ b/contracts/protocol/contracts/protocol/Exchange/mixins/MMatchOrders.sol
@@ -15,7 +15,7 @@
  limitations under the License.

 */
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
--- a/contracts/protocol/contracts/protocol/Exchange/mixins/MSignatureValidator.sol
+++ b/contracts/protocol/contracts/protocol/Exchange/mixins/MSignatureValidator.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-interfaces/contracts/protocol/Exchange/ISignatureValidator.sol";

--- a/contracts/protocol/contracts/protocol/Exchange/mixins/MTransactions.sol
+++ b/contracts/protocol/contracts/protocol/Exchange/mixins/MTransactions.sol
@@ -15,7 +15,7 @@
  limitations under the License.

 */
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-interfaces/contracts/protocol/Exchange/ITransactions.sol";

--- a/contracts/protocol/contracts/protocol/Exchange/mixins/MWrapperFunctions.sol
+++ b/contracts/protocol/contracts/protocol/Exchange/mixins/MWrapperFunctions.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;

 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
--- a/contracts/tokens/contracts/tokens/ERC20Token/ERC20Token.sol
+++ b/contracts/tokens/contracts/tokens/ERC20Token/ERC20Token.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "./IERC20Token.sol";

--- a/contracts/tokens/contracts/tokens/ERC20Token/IERC20Token.sol
+++ b/contracts/tokens/contracts/tokens/ERC20Token/IERC20Token.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract IERC20Token {
--- a/contracts/tokens/contracts/tokens/ERC20Token/MintableERC20Token.sol
+++ b/contracts/tokens/contracts/tokens/ERC20Token/MintableERC20Token.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "@0x/contracts-utils/contracts/utils/SafeMath/SafeMath.sol";
 import "./UnlimitedAllowanceERC20Token.sol";
--- a/contracts/tokens/contracts/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol
+++ b/contracts/tokens/contracts/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "../ERC20Token/ERC20Token.sol";

--- a/contracts/tokens/contracts/tokens/ERC721Token/ERC721Token.sol
+++ b/contracts/tokens/contracts/tokens/ERC721Token/ERC721Token.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "./IERC721Token.sol";
 import "./IERC721Receiver.sol";
--- a/contracts/tokens/contracts/tokens/ERC721Token/IERC721Receiver.sol
+++ b/contracts/tokens/contracts/tokens/ERC721Token/IERC721Receiver.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract IERC721Receiver {
--- a/contracts/tokens/contracts/tokens/ERC721Token/IERC721Token.sol
+++ b/contracts/tokens/contracts/tokens/ERC721Token/IERC721Token.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract IERC721Token {
--- a/contracts/tokens/contracts/tokens/ERC721Token/MintableERC721Token.sol
+++ b/contracts/tokens/contracts/tokens/ERC721Token/MintableERC721Token.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "./ERC721Token.sol";

--- a/contracts/tokens/contracts/tokens/EtherToken/IEtherToken.sol
+++ b/contracts/tokens/contracts/tokens/EtherToken/IEtherToken.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "../ERC20Token/IERC20Token.sol";

--- a/contracts/utils/contracts/utils/LibBytes/LibBytes.sol
+++ b/contracts/utils/contracts/utils/LibBytes/LibBytes.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 library LibBytes {
--- a/contracts/utils/contracts/utils/Ownable/IOwnable.sol
+++ b/contracts/utils/contracts/utils/Ownable/IOwnable.sol
@@ -1,4 +1,4 @@
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract IOwnable {
--- a/contracts/utils/contracts/utils/Ownable/Ownable.sol
+++ b/contracts/utils/contracts/utils/Ownable/Ownable.sol
@@ -1,4 +1,4 @@
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;

 import "./IOwnable.sol";

--- a/contracts/utils/contracts/utils/ReentrancyGuard/ReentrancyGuard.sol
+++ b/contracts/utils/contracts/utils/ReentrancyGuard/ReentrancyGuard.sol
@@ -16,7 +16,7 @@

 */

-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract ReentrancyGuard {
--- a/contracts/utils/contracts/utils/SafeMath/SafeMath.sol
+++ b/contracts/utils/contracts/utils/SafeMath/SafeMath.sol
@@ -1,4 +1,4 @@
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;


 contract SafeMath {