24 files changed, 32 insertions, 33 deletions
diff --git a/packages/contracts/build/artifacts/DummyToken.json b/packages/contracts/build/artifacts/DummyToken.json
deleted file mode 100644
index e69de29bb..000000000
--- a/packages/contracts/build/artifacts/DummyToken.json
+++ /dev/null
diff --git a/packages/contracts/build/artifacts/ERC20Token.json b/packages/contracts/build/artifacts/ERC20Token.json
deleted file mode 100644
index e69de29bb..000000000
--- a/packages/contracts/build/artifacts/ERC20Token.json
+++ /dev/null
diff --git a/packages/contracts/contracts/current/Exchange/Exchange.sol b/packages/contracts/contracts/current/Exchange/Exchange.sol
index 690c9820f..c0bbff2cd 100644
--- a/packages/contracts/contracts/current/Exchange/Exchange.sol
+++ b/packages/contracts/contracts/current/Exchange/Exchange.sol
@@ -18,9 +18,9 @@
 
 pragma solidity ^0.4.11;
 
-import "../TokenTransferProxy/TokenTransferProxy.sol";
-import "../../old/Token/v1.sol";
-import "../../old/SafeMath/v1.sol";
+import { TokenTransferProxy } from "../TokenTransferProxy/TokenTransferProxy.sol";
+import { Token_v1 as Token } from "../../previous/Token/Token_v1.sol";
+import { SafeMath_v1 as SafeMath } from "../../previous/SafeMath/SafeMath_v1.sol";
 
 /// @title Exchange - Facilitates exchange of ERC20 tokens.
 /// @author Amir Bandeali - <amir@0xProject.com>, Will Warren - <will@0xProject.com>
diff --git a/packages/contracts/contracts/current/TokenRegistry/TokenRegistry.sol b/packages/contracts/contracts/current/TokenRegistry/TokenRegistry.sol
index 29b42c0ef..ea7a5ff1b 100644
--- a/packages/contracts/contracts/current/TokenRegistry/TokenRegistry.sol
+++ b/packages/contracts/contracts/current/TokenRegistry/TokenRegistry.sol
@@ -18,7 +18,7 @@
 
 pragma solidity ^0.4.11;
 
-import "../../old/Ownable/v1.sol";
+import { Ownable_v1 as Ownable } from "../../previous/Ownable/Ownable_v1.sol";
 
 /// @title Token Registry - Stores metadata associated with ERC20 tokens. See ERC22 https://github.com/ethereum/EIPs/issues/22
 /// @author Amir Bandeali - <amir@0xProject.com>, Will Warren - <will@0xProject.com>
diff --git a/packages/contracts/contracts/current/TokenTransferProxy/TokenTransferProxy.sol b/packages/contracts/contracts/current/TokenTransferProxy/TokenTransferProxy.sol
index 62adfaa8e..3a1636f37 100644
--- a/packages/contracts/contracts/current/TokenTransferProxy/TokenTransferProxy.sol
+++ b/packages/contracts/contracts/current/TokenTransferProxy/TokenTransferProxy.sol
@@ -18,8 +18,8 @@
 
 pragma solidity ^0.4.11;
 
-import "../../old/Token/v1.sol";
-import "../../old/Ownable/v1.sol";
+import { Token_v1 as Token } from "../../previous/Token/Token_v1.sol";
+import { Ownable_v1 as Ownable } from "../../previous/Ownable/Ownable_v1.sol";
 
 /// @title TokenTransferProxy - Transfers tokens on behalf of contracts that have been approved via decentralized governance.
 /// @author Amir Bandeali - <amir@0xProject.com>, Will Warren - <will@0xProject.com>
diff --git a/packages/contracts/contracts/current/MultiSigWallet/MultiSigWallet.sol b/packages/contracts/contracts/current/multisig/MultiSigWallet/MultiSigWallet.sol
index ae7ef06fd..ae7ef06fd 100644
--- a/packages/contracts/contracts/current/MultiSigWallet/MultiSigWallet.sol
+++ b/packages/contracts/contracts/current/multisig/MultiSigWallet/MultiSigWallet.sol
diff --git a/packages/contracts/contracts/current/MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol b/packages/contracts/contracts/current/multisig/MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol
index f8606762e..46c152035 100644
--- a/packages/contracts/contracts/current/MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol
+++ b/packages/contracts/contracts/current/multisig/MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol
@@ -18,7 +18,7 @@
 
 pragma solidity ^0.4.11;
 
-import "../MultiSigWallet/MultiSigWallet.sol";
+import { MultiSigWallet } from "../MultiSigWallet/MultiSigWallet.sol";
 
 /// @title Multisignature wallet with time lock- Allows multiple parties to execute a transaction after a time lock has passed.
 /// @author Amir Bandeali - <amir@0xProject.com>
diff --git a/packages/contracts/contracts/current/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol b/packages/contracts/contracts/current/multisig/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol
index 81a3d4637..8cc8372c1 100644
--- a/packages/contracts/contracts/current/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol
+++ b/packages/contracts/contracts/current/multisig/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.sol
@@ -18,7 +18,7 @@
 
 pragma solidity ^0.4.11;
 
-import "../MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol";
+import { MultiSigWalletWithTimeLock } from "../MultiSigWalletWithTimeLock/MultiSigWalletWithTimeLock.sol";
 
 contract MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress is MultiSigWalletWithTimeLock {
 
diff --git a/packages/contracts/contracts/current/DummyToken/DummyToken.sol b/packages/contracts/contracts/current/test/DummyToken/DummyToken.sol
index 67d6a818d..ab04f4d16 100644
--- a/packages/contracts/contracts/current/DummyToken/DummyToken.sol
+++ b/packages/contracts/contracts/current/test/DummyToken/DummyToken.sol
@@ -1,7 +1,7 @@
-pragma solidity 0.4.18;
+pragma solidity ^0.4.18;
 
-import "../Mintable/Mintable.sol";
-import "../Ownable/Ownable.sol";
+import { Mintable } from "../Mintable/Mintable.sol";
+import { Ownable } from "../../utils/Ownable/Ownable.sol";
 
 contract DummyToken is Mintable, Ownable {
     string public name;
diff --git a/packages/contracts/contracts/current/MaliciousToken/MaliciousToken.sol b/packages/contracts/contracts/current/test/MaliciousToken/MaliciousToken.sol
index c3cace9af..9e502616c 100644
--- a/packages/contracts/contracts/current/MaliciousToken/MaliciousToken.sol
+++ b/packages/contracts/contracts/current/test/MaliciousToken/MaliciousToken.sol
@@ -1,8 +1,8 @@
-pragma solidity ^0.4.11;
+pragma solidity ^0.4.18;
 
-import "../StandardToken/StandardToken.sol";
+import { ERC20Token } from "../../tokens/ERC20Token/ERC20Token.sol";
 
-contract MaliciousToken is StandardToken {
+contract MaliciousToken is ERC20Token {
     uint8 stateToUpdate = 1;  // Not null so that change only requires 5000 gas
 
     function updateState()
diff --git a/packages/contracts/contracts/current/Mintable/Mintable.sol b/packages/contracts/contracts/current/test/Mintable/Mintable.sol
index 2dbc0f349..cf7ee35a5 100644
--- a/packages/contracts/contracts/current/Mintable/Mintable.sol
+++ b/packages/contracts/contracts/current/test/Mintable/Mintable.sol
@@ -1,7 +1,7 @@
-pragma solidity 0.4.18;
+pragma solidity ^0.4.18;
 
-import "../UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol";
-import "../SafeMath/SafeMath.sol";
+import { UnlimitedAllowanceToken } from "../../tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol";
+import { SafeMath } from "../../utils/SafeMath/SafeMath.sol";
 
 /*
  * Mintable
diff --git a/packages/contracts/contracts/current/ERC20Token/ERC20Token.sol b/packages/contracts/contracts/current/tokens/ERC20Token/ERC20Token.sol
index 976b5564e..0e5b87aa4 100644
--- a/packages/contracts/contracts/current/ERC20Token/ERC20Token.sol
+++ b/packages/contracts/contracts/current/tokens/ERC20Token/ERC20Token.sol
@@ -1,6 +1,6 @@
-pragma solidity 0.4.18;
+pragma solidity ^0.4.18;
 
-import "../Token/Token.sol";
+import { Token } from "../Token/Token.sol";
 
 contract ERC20Token is Token {
 
diff --git a/packages/contracts/contracts/current/Token/Token.sol b/packages/contracts/contracts/current/tokens/Token/Token.sol
index 8688bcae8..bf4e71dcd 100644
--- a/packages/contracts/contracts/current/Token/Token.sol
+++ b/packages/contracts/contracts/current/tokens/Token/Token.sol
@@ -1,4 +1,4 @@
-pragma solidity 0.4.18;
+pragma solidity ^0.4.18;
 
 contract Token {
 
diff --git a/packages/contracts/contracts/current/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol b/packages/contracts/contracts/current/tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol
index 52b80f8c8..699f535d2 100644
--- a/packages/contracts/contracts/current/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol
+++ b/packages/contracts/contracts/current/tokens/UnlimitedAllowanceToken/UnlimitedAllowanceToken.sol
@@ -16,9 +16,9 @@
 
 */
 
-pragma solidity 0.4.18;
+pragma solidity ^0.4.18;
 
-import "../ERC20Token/ERC20Token.sol";
+import { ERC20Token } from "../ERC20Token/ERC20Token.sol";
 
 contract UnlimitedAllowanceToken is ERC20Token {
 
diff --git a/packages/contracts/contracts/current/WETH9/WETH9.sol b/packages/contracts/contracts/current/tokens/WETH9/WETH9.sol
index 733ca414b..733ca414b 100644
--- a/packages/contracts/contracts/current/WETH9/WETH9.sol
+++ b/packages/contracts/contracts/current/tokens/WETH9/WETH9.sol
diff --git a/packages/contracts/contracts/current/ZRXToken/ZRXToken.sol b/packages/contracts/contracts/current/tokens/ZRXToken/ZRXToken.sol
index 7b293da61..7f5e1f849 100644
--- a/packages/contracts/contracts/current/ZRXToken/ZRXToken.sol
+++ b/packages/contracts/contracts/current/tokens/ZRXToken/ZRXToken.sol
@@ -18,7 +18,7 @@
 
 pragma solidity ^0.4.11;
 
-import "../../old/UnlimitedAllowanceToken/v1.sol";
+import { UnlimitedAllowanceToken_v1 as UnlimitedAllowanceToken } from "../../../previous/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol";
 
 contract ZRXToken is UnlimitedAllowanceToken {
 
diff --git a/packages/contracts/contracts/current/Ownable/Ownable.sol b/packages/contracts/contracts/current/utils/Ownable/Ownable.sol
index 199c3c1c1..9b3d6b9cf 100644
--- a/packages/contracts/contracts/current/Ownable/Ownable.sol
+++ b/packages/contracts/contracts/current/utils/Ownable/Ownable.sol
@@ -1,4 +1,4 @@
-pragma solidity 0.4.18;
+pragma solidity ^0.4.18;
 
 /*
  * Ownable
diff --git a/packages/contracts/contracts/current/SafeMath/SafeMath.sol b/packages/contracts/contracts/current/utils/SafeMath/SafeMath.sol
index 325bddc82..955a9e379 100644
--- a/packages/contracts/contracts/current/SafeMath/SafeMath.sol
+++ b/packages/contracts/contracts/current/utils/SafeMath/SafeMath.sol
@@ -1,4 +1,4 @@
-pragma solidity 0.4.18;
+pragma solidity ^0.4.18;
 
 contract SafeMath {
     function safeMul(uint a, uint b)
diff --git a/packages/contracts/contracts/current/StandardToken/StandardToken.sol b/packages/contracts/contracts/previous/ERC20Token/ERC20Token_v1.sol
index 9da3fa782..e05ee2d5e 100644
--- a/packages/contracts/contracts/current/StandardToken/StandardToken.sol
+++ b/packages/contracts/contracts/previous/ERC20Token/ERC20Token_v1.sol
@@ -1,8 +1,8 @@
 pragma solidity ^0.4.11;
 
-import "../../old/Token/v1.sol";
+import { Token_v1 as Token } from "../Token/Token_v1.sol";
 
-contract StandardToken is Token {
+contract ERC20Token_v1 is Token {
 
     function transfer(address _to, uint _value) returns (bool) {
         //Default assumes totalSupply can't be over max (2^256 - 1).
diff --git a/packages/contracts/contracts/old/Ownable/v1.sol b/packages/contracts/contracts/previous/Ownable/Ownable_v1.sol
index 5488896d7..3630678f7 100644
--- a/packages/contracts/contracts/old/Ownable/v1.sol
+++ b/packages/contracts/contracts/previous/Ownable/Ownable_v1.sol
@@ -7,7 +7,7 @@ pragma solidity ^0.4.11;
  * Provides onlyOwner modifier, which prevents function from running if it is called by anyone other than the owner.
  */
 
-contract Ownable {
+contract Ownable_v1 {
     address public owner;
 
     function Ownable() {
diff --git a/packages/contracts/contracts/old/SafeMath/v1.sol b/packages/contracts/contracts/previous/SafeMath/SafeMath_v1.sol
index e35c0dc81..341d611ec 100644
--- a/packages/contracts/contracts/old/SafeMath/v1.sol
+++ b/packages/contracts/contracts/previous/SafeMath/SafeMath_v1.sol
@@ -1,6 +1,6 @@
 pragma solidity ^0.4.11;
 
-contract SafeMath {
+contract SafeMath_v1 {
     function safeMul(uint a, uint b)
         internal
         constant
diff --git a/packages/contracts/contracts/old/Token/v1.sol b/packages/contracts/contracts/previous/Token/Token_v1.sol
index 507de9b12..de619fb7e 100644
--- a/packages/contracts/contracts/old/Token/v1.sol
+++ b/packages/contracts/contracts/previous/Token/Token_v1.sol
@@ -1,6 +1,6 @@
 pragma solidity ^0.4.11;
 
-contract Token {
+contract Token_v1 {
 
     /// @return total amount of tokens
     function totalSupply() constant returns (uint supply) {}
diff --git a/packages/contracts/contracts/old/UnlimitedAllowanceToken/v1.sol b/packages/contracts/contracts/previous/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol
index fc794998a..6376f3f2c 100644
--- a/packages/contracts/contracts/old/UnlimitedAllowanceToken/v1.sol
+++ b/packages/contracts/contracts/previous/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol
@@ -18,9 +18,9 @@
 
 pragma solidity ^0.4.11;
 
-import "../../contracts/StandardToken/StandardToken.sol";
+import { ERC20Token_v1 as ERC20Token } from "../ERC20Token/ERC20Token_v1.sol";
 
-contract UnlimitedAllowanceToken is StandardToken {
+contract UnlimitedAllowanceToken_v1 is ERC20Token {
 
     uint constant MAX_UINT = 2**256 - 1;
 
diff --git a/packages/contracts/util/artifacts.ts b/packages/contracts/util/artifacts.ts
index 145b1db3b..cbe6e24c0 100644
--- a/packages/contracts/util/artifacts.ts
+++ b/packages/contracts/util/artifacts.ts
@@ -1,5 +1,4 @@
 import * as DummyTokenArtifact from '../build/artifacts/DummyToken.json';
-import * as DummyTokenV2Artifact from '../build/artifacts/DummyToken_v2.json';
 import * as ExchangeArtifact from '../build/artifacts/Exchange.json';
 import * as MaliciousTokenArtifact from '../build/artifacts/MaliciousToken.json';
 import * as MultiSigWalletWithTimeLockArtifact from '../build/artifacts/MultiSigWalletWithTimeLock.json';