Move LibAddressArray to utils package

contracts/libs/contracts/libs/LibFillResults.sol

@@ -18,7 +18,7 @@
 
 pragma solidity ^0.4.24;
 
-import "@0x/contracts-utils/contracts/utils/SafeMath/SafeMath.sol";
+import "@0x/contracts-utils/contracts/utils/SafeMath.sol";
 
 
 contract LibFillResults is

contracts/libs/contracts/libs/LibMath.sol

@@ -18,7 +18,7 @@
 
 pragma solidity ^0.4.24;
 
-import "@0x/contracts-utils/contracts/utils/SafeMath/SafeMath.sol";
+import "@0x/contracts-utils/contracts/utils/SafeMath.sol";
 
 
 contract LibMath is

contracts/libs/contracts/test/TestLibs.sol

@@ -16,13 +16,13 @@
 
 */
 
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../../libs/LibMath.sol";
-import "../../libs/LibOrder.sol";
-import "../../libs/LibFillResults.sol";
-import "../../libs/LibAbiEncoder.sol";
+import "../libs/LibMath.sol";
+import "../libs/LibOrder.sol";
+import "../libs/LibFillResults.sol";
+import "../libs/LibAbiEncoder.sol";
 
 
 contract TestLibs is 

contracts/libs/test/exchange_libs.ts

@@ -13,8 +13,8 @@ import { SignedOrder } from '@0x/types';
 import { BigNumber } from '@0x/utils';
 import * as chai from 'chai';
 
-import { TestLibsContract } from '../../generated-wrappers/test_libs';
-import { artifacts } from '../../src/artifacts';
+import { TestLibsContract } from '../generated-wrappers/test_libs';
+import { artifacts } from '../src/artifacts';
 
 chaiSetup.configure();
 const expect = chai.expect;

contracts/utils/contracts/test/TestConstants.sol

@@ -16,9 +16,9 @@
 
 */
 
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 
-import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
+import "../utils/LibBytes.sol";
 
 
 // solhint-disable max-line-length

contracts/utils/contracts/test/TestLibBytes.sol

@@ -16,9 +16,9 @@
 
 */
 
-pragma solidity 0.4.24;
+pragma solidity ^0.4.24;
 
-import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
+import "../utils/LibBytes.sol";
 
 
 contract TestLibBytes {

contracts/utils/contracts/utils/LibAddressArray.sol

@@ -18,7 +18,7 @@
 
 pragma solidity ^0.4.24;
 
-import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
+import "./LibBytes.sol";
 
 
 library LibAddressArray {

contracts/utils/contracts/utils/Ownable.sol

@@ -1,6 +1,6 @@
 pragma solidity ^0.4.24;
 
-import "./IOwnable.sol";
+import "./interfaces/IOwnable.sol";
 
 
 contract Ownable is