Move generated contract wrappers and artifacts into contracts package

11 files changed, 0 insertions, 1758 deletions

diff --git a/packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol b/packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol
deleted file mode 100644
index 725d304df..000000000
--- a/packages/contracts/src/2.0.0/tokens/ERC20Token/ERC20Token.sol
+++ /dev/null
@@ -1,148 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-import "./IERC20Token.sol";
-
-
-contract ERC20Token is
-    IERC20Token
-{
-    mapping (address => uint256) internal balances;
-    mapping (address => mapping (address => uint256)) internal allowed;
-
-    uint256 internal _totalSupply;
-
-    /// @dev send `value` token to `to` from `msg.sender`
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    /// @return True if transfer was successful
-    function transfer(address _to, uint256 _value)
-        external
-        returns (bool)
-    {
-        require(
-            balances[msg.sender] >= _value,
-            "ERC20_INSUFFICIENT_BALANCE"
-        );
-        require(
-            balances[_to] + _value >= balances[_to],
-            "UINT256_OVERFLOW"
-        );
-
-        balances[msg.sender] -= _value;
-        balances[_to] += _value;
-
-        emit Transfer(
-            msg.sender,
-            _to,
-            _value
-        );
-
-        return true;
-    }
-
-    /// @dev send `value` token to `to` from `from` on the condition it is approved by `from`
-    /// @param _from The address of the sender
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    /// @return True if transfer was successful
-    function transferFrom(
-        address _from,
-        address _to,
-        uint256 _value
-    )
-        external
-        returns (bool)
-    {
-        require(
-            balances[_from] >= _value,
-            "ERC20_INSUFFICIENT_BALANCE"
-        );
-        require(
-            allowed[_from][msg.sender] >= _value,
-            "ERC20_INSUFFICIENT_ALLOWANCE"
-        );
-        require(
-            balances[_to] + _value >= balances[_to],
-            "UINT256_OVERFLOW"
-        );
-
-        balances[_to] += _value;
-        balances[_from] -= _value;
-        allowed[_from][msg.sender] -= _value;
-    
-        emit Transfer(
-            _from,
-            _to,
-            _value
-        );
-    
-        return true;
-    }
-
-    /// @dev `msg.sender` approves `_spender` to spend `_value` tokens
-    /// @param _spender The address of the account able to transfer the tokens
-    /// @param _value The amount of wei to be approved for transfer
-    /// @return Always true if the call has enough gas to complete execution
-    function approve(address _spender, uint256 _value)
-        external
-        returns (bool)
-    {
-        allowed[msg.sender][_spender] = _value;
-        emit Approval(
-            msg.sender,
-            _spender,
-            _value
-        );
-        return true;
-    }
-
-    /// @dev Query total supply of token
-    /// @return Total supply of token
-    function totalSupply()
-        external
-        view
-        returns (uint256)
-    {
-        return _totalSupply;
-    }
-
-    /// @dev Query the balance of owner
-    /// @param _owner The address from which the balance will be retrieved
-    /// @return Balance of owner
-    function balanceOf(address _owner)
-        external
-        view
-        returns (uint256)
-    {
-        return balances[_owner];
-    }
-
-    /// @param _owner The address of the account owning tokens
-    /// @param _spender The address of the account able to transfer the tokens
-    /// @return Amount of remaining tokens allowed to spent
-    function allowance(address _owner, address _spender)
-        external
-        view
-        returns (uint256)
-    {
-        return allowed[_owner][_spender];
-    }
-}
diff --git a/packages/contracts/src/2.0.0/tokens/ERC20Token/IERC20Token.sol b/packages/contracts/src/2.0.0/tokens/ERC20Token/IERC20Token.sol
deleted file mode 100644
index 258d47393..000000000
--- a/packages/contracts/src/2.0.0/tokens/ERC20Token/IERC20Token.sol
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-
-contract IERC20Token {
-
-    // solhint-disable no-simple-event-func-name
-    event Transfer(
-        address indexed _from,
-        address indexed _to,
-        uint256 _value
-    );
-
-    event Approval(
-        address indexed _owner,
-        address indexed _spender,
-        uint256 _value
-    );
-
-    /// @dev send `value` token to `to` from `msg.sender`
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    /// @return True if transfer was successful
-    function transfer(address _to, uint256 _value)
-        external
-        returns (bool);
-
-    /// @dev send `value` token to `to` from `from` on the condition it is approved by `from`
-    /// @param _from The address of the sender
-    /// @param _to The address of the recipient
-    /// @param _value The amount of token to be transferred
-    /// @return True if transfer was successful
-    function transferFrom(
-        address _from,
-        address _to,
-        uint256 _value
-    )
-        external
-        returns (bool);
-    
-    /// @dev `msg.sender` approves `_spender` to spend `_value` tokens
-    /// @param _spender The address of the account able to transfer the tokens
-    /// @param _value The amount of wei to be approved for transfer
-    /// @return Always true if the call has enough gas to complete execution
-    function approve(address _spender, uint256 _value)
-        external
-        returns (bool);
-
-    /// @dev Query total supply of token
-    /// @return Total supply of token
-    function totalSupply()
-        external
-        view
-        returns (uint256);
-    
-    /// @param _owner The address from which the balance will be retrieved
-    /// @return Balance of owner
-    function balanceOf(address _owner)
-        external
-        view
-        returns (uint256);
-
-    /// @param _owner The address of the account owning tokens
-    /// @param _spender The address of the account able to transfer the tokens
-    /// @return Amount of remaining tokens allowed to spent
-    function allowance(address _owner, address _spender)
-        external
-        view
-        returns (uint256);
-}
diff --git a/packages/contracts/src/2.0.0/tokens/ERC20Token/MintableERC20Token.sol b/packages/contracts/src/2.0.0/tokens/ERC20Token/MintableERC20Token.sol
deleted file mode 100644
index 9dc924422..000000000
--- a/packages/contracts/src/2.0.0/tokens/ERC20Token/MintableERC20Token.sol
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-import "../../utils/SafeMath/SafeMath.sol";
-import "./UnlimitedAllowanceERC20Token.sol";
-
-
-contract MintableERC20Token is 
-    SafeMath,
-    UnlimitedAllowanceERC20Token
-{
-    /// @dev Mints new tokens
-    /// @param _to Address of the beneficiary that will own the minted token
-    /// @param _value Amount of tokens to mint
-    function _mint(address _to, uint256 _value)
-        internal
-    {
-        balances[_to] = safeAdd(_value, balances[_to]);
-        _totalSupply = safeAdd(_totalSupply, _value);
-
-        emit Transfer(
-            address(0),
-            _to,
-            _value
-        );
-    }
-
-    /// @dev Mints new tokens
-    /// @param _owner Owner of tokens that will be burned
-    /// @param _value Amount of tokens to burn
-    function _burn(address _owner, uint256 _value)
-        internal
-    {
-        balances[_owner] = safeSub(balances[_owner], _value);
-        _totalSupply = safeSub(_totalSupply, _value);
-
-        emit Transfer(
-            _owner,
-            address(0),
-            _value
-        );
-    }
-}
diff --git a/packages/contracts/src/2.0.0/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol b/packages/contracts/src/2.0.0/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol
deleted file mode 100644
index 2e5bd4348..000000000
--- a/packages/contracts/src/2.0.0/tokens/ERC20Token/UnlimitedAllowanceERC20Token.sol
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-import "../ERC20Token/ERC20Token.sol";
-
-
-contract UnlimitedAllowanceERC20Token is
-    ERC20Token
-{
-    uint256 constant internal MAX_UINT = 2**256 - 1;
-
-    /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance. See https://github.com/ethereum/EIPs/issues/717
-    /// @param _from Address to transfer from.
-    /// @param _to Address to transfer to.
-    /// @param _value Amount to transfer.
-    /// @return Success of transfer.
-    function transferFrom(
-        address _from,
-        address _to,
-        uint256 _value
-    )
-        external
-        returns (bool)
-    {
-        uint256 allowance = allowed[_from][msg.sender];
-        require(
-            balances[_from] >= _value,
-            "ERC20_INSUFFICIENT_BALANCE"
-        );
-        require(
-            allowance >= _value,
-            "ERC20_INSUFFICIENT_ALLOWANCE"
-        );
-        require(
-            balances[_to] + _value >= balances[_to],
-            "UINT256_OVERFLOW"
-        );
-
-        balances[_to] += _value;
-        balances[_from] -= _value;
-        if (allowance < MAX_UINT) {
-            allowed[_from][msg.sender] -= _value;
-        }
-
-        emit Transfer(
-            _from,
-            _to,
-            _value
-        );
-
-        return true;
-    }
-}
diff --git a/packages/contracts/src/2.0.0/tokens/ERC721Token/ERC721Token.sol b/packages/contracts/src/2.0.0/tokens/ERC721Token/ERC721Token.sol
deleted file mode 100644
index 530f080c0..000000000
--- a/packages/contracts/src/2.0.0/tokens/ERC721Token/ERC721Token.sol
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-import "./IERC721Token.sol";
-import "./IERC721Receiver.sol";
-import "../../utils/SafeMath/SafeMath.sol";
-
-
-contract ERC721Token is
-    IERC721Token,
-    SafeMath
-{
-    // Function selector for ERC721Receiver.onERC721Received
-    // 0x150b7a02
-    bytes4 constant internal ERC721_RECEIVED = bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"));
-
-    // Mapping of tokenId => owner
-    mapping (uint256 => address) internal owners;
-
-    // Mapping of tokenId => approved address
-    mapping (uint256 => address) internal approvals;
-
-    // Mapping of owner => number of tokens owned
-    mapping (address => uint256) internal balances;
-
-    // Mapping of owner => operator => approved
-    mapping (address => mapping (address => bool)) internal operatorApprovals;
-
-    /// @notice Transfers the ownership of an NFT from one address to another address
-    /// @dev Throws unless `msg.sender` is the current owner, an authorized
-    ///      operator, or the approved address for this NFT. Throws if `_from` is
-    ///      not the current owner. Throws if `_to` is the zero address. Throws if
-    ///      `_tokenId` is not a valid NFT. When transfer is complete, this function
-    ///      checks if `_to` is a smart contract (code size > 0). If so, it calls
-    ///      `onERC721Received` on `_to` and throws if the return value is not
-    ///      `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`.
-    /// @param _from The current owner of the NFT
-    /// @param _to The new owner
-    /// @param _tokenId The NFT to transfer
-    /// @param _data Additional data with no specified format, sent in call to `_to`
-    function safeTransferFrom(
-        address _from,
-        address _to,
-        uint256 _tokenId,
-        bytes _data
-    )
-        external
-    {
-        transferFrom(
-            _from,
-            _to,
-            _tokenId
-        );
-
-        uint256 receiverCodeSize;
-        assembly {
-            receiverCodeSize := extcodesize(_to)
-        }
-        if (receiverCodeSize > 0) {
-            bytes4 selector = IERC721Receiver(_to).onERC721Received(
-                msg.sender,
-                _from,
-                _tokenId,
-                _data
-            );
-            require(
-                selector == ERC721_RECEIVED,
-                "ERC721_INVALID_SELECTOR"
-            );
-        }
-    }
-
-    /// @notice Transfers the ownership of an NFT from one address to another address
-    /// @dev This works identically to the other function with an extra data parameter,
-    ///      except this function just sets data to "".
-    /// @param _from The current owner of the NFT
-    /// @param _to The new owner
-    /// @param _tokenId The NFT to transfer
-    function safeTransferFrom(
-        address _from,
-        address _to,
-        uint256 _tokenId
-    )
-        external
-    {
-        transferFrom(
-            _from,
-            _to,
-            _tokenId
-        );
-
-        uint256 receiverCodeSize;
-        assembly {
-            receiverCodeSize := extcodesize(_to)
-        }
-        if (receiverCodeSize > 0) {
-            bytes4 selector = IERC721Receiver(_to).onERC721Received(
-                msg.sender,
-                _from,
-                _tokenId,
-                ""
-            );
-            require(
-                selector == ERC721_RECEIVED,
-                "ERC721_INVALID_SELECTOR"
-            );
-        }
-    }
-
-    /// @notice Change or reaffirm the approved address for an NFT
-    /// @dev The zero address indicates there is no approved address.
-    ///      Throws unless `msg.sender` is the current NFT owner, or an authorized
-    ///      operator of the current owner.
-    /// @param _approved The new approved NFT controller
-    /// @param _tokenId The NFT to approve
-    function approve(address _approved, uint256 _tokenId)
-        external
-    {
-        address owner = ownerOf(_tokenId);
-        require(
-            msg.sender == owner || isApprovedForAll(owner, msg.sender),
-            "ERC721_INVALID_SENDER"
-        );
-
-        approvals[_tokenId] = _approved;
-        emit Approval(
-            owner,
-            _approved,
-            _tokenId
-        );
-    }
-
-    /// @notice Enable or disable approval for a third party ("operator") to manage
-    ///         all of `msg.sender`'s assets
-    /// @dev Emits the ApprovalForAll event. The contract MUST allow
-    ///      multiple operators per owner.
-    /// @param _operator Address to add to the set of authorized operators
-    /// @param _approved True if the operator is approved, false to revoke approval
-    function setApprovalForAll(address _operator, bool _approved)
-        external
-    {
-        operatorApprovals[msg.sender][_operator] = _approved;
-        emit ApprovalForAll(
-            msg.sender,
-            _operator,
-            _approved
-        );
-    }
-    
-    /// @notice Count all NFTs assigned to an owner
-    /// @dev NFTs assigned to the zero address are considered invalid, and this
-    ///      function throws for queries about the zero address.
-    /// @param _owner An address for whom to query the balance
-    /// @return The number of NFTs owned by `_owner`, possibly zero
-    function balanceOf(address _owner)
-        external
-        view
-        returns (uint256)
-    {
-        require(
-            _owner != address(0),
-            "ERC721_ZERO_OWNER"
-        );
-        return balances[_owner];
-    }
-
-    /// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE
-    ///         TO CONFIRM THAT `_to` IS CAPABLE OF RECEIVING NFTS OR ELSE
-    ///         THEY MAY BE PERMANENTLY LOST
-    /// @dev Throws unless `msg.sender` is the current owner, an authorized
-    ///      operator, or the approved address for this NFT. Throws if `_from` is
-    ///      not the current owner. Throws if `_to` is the zero address. Throws if
-    ///      `_tokenId` is not a valid NFT.
-    /// @param _from The current owner of the NFT
-    /// @param _to The new owner
-    /// @param _tokenId The NFT to transfer
-    function transferFrom(
-        address _from,
-        address _to,
-        uint256 _tokenId
-    )
-        public
-    {
-        require(
-            _to != address(0),
-            "ERC721_ZERO_TO_ADDRESS"
-        );
-
-        address owner = ownerOf(_tokenId);
-        require(
-            _from == owner,
-            "ERC721_OWNER_MISMATCH"
-        );
-
-        address spender = msg.sender;
-        address approvedAddress = getApproved(_tokenId);
-        require(
-            spender == owner ||
-            isApprovedForAll(owner, spender) ||
-            approvedAddress == spender,
-            "ERC721_INVALID_SPENDER"
-        );
-
-        if (approvedAddress != address(0)) {
-            approvals[_tokenId] = address(0);
-        }
-
-        owners[_tokenId] = _to;
-        balances[_from] = safeSub(balances[_from], 1);
-        balances[_to] = safeAdd(balances[_to], 1);
-    
-        emit Transfer(
-            _from,
-            _to,
-            _tokenId
-        );
-    }
-
-    /// @notice Find the owner of an NFT
-    /// @dev NFTs assigned to zero address are considered invalid, and queries
-    ///      about them do throw.
-    /// @param _tokenId The identifier for an NFT
-    /// @return The address of the owner of the NFT
-    function ownerOf(uint256 _tokenId)
-        public
-        view
-        returns (address)
-    {
-        address owner = owners[_tokenId];
-        require(
-            owner != address(0),
-            "ERC721_ZERO_OWNER"
-        );
-        return owner;
-    }
-
-    /// @notice Get the approved address for a single NFT
-    /// @dev Throws if `_tokenId` is not a valid NFT.
-    /// @param _tokenId The NFT to find the approved address for
-    /// @return The approved address for this NFT, or the zero address if there is none
-    function getApproved(uint256 _tokenId)
-        public
-        view
-        returns (address)
-    {
-        return approvals[_tokenId];
-    }
-
-    /// @notice Query if an address is an authorized operator for another address
-    /// @param _owner The address that owns the NFTs
-    /// @param _operator The address that acts on behalf of the owner
-    /// @return True if `_operator` is an approved operator for `_owner`, false otherwise
-    function isApprovedForAll(address _owner, address _operator)
-        public
-        view
-        returns (bool)
-    {
-        return operatorApprovals[_owner][_operator];
-    }
-}
diff --git a/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Receiver.sol b/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Receiver.sol
deleted file mode 100644
index 8e0e32ab2..000000000
--- a/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Receiver.sol
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-
-contract IERC721Receiver {
-
-    /// @notice Handle the receipt of an NFT
-    /// @dev The ERC721 smart contract calls this function on the recipient
-    ///  after a `transfer`. This function MAY throw to revert and reject the
-    ///  transfer. Return of other than the magic value MUST result in the
-    ///  transaction being reverted.
-    ///  Note: the contract address is always the message sender.
-    /// @param _operator The address which called `safeTransferFrom` function
-    /// @param _from The address which previously owned the token
-    /// @param _tokenId The NFT identifier which is being transferred
-    /// @param _data Additional data with no specified format
-    /// @return `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
-    ///  unless throwing
-    function onERC721Received(
-        address _operator,
-        address _from,
-        uint256 _tokenId,
-        bytes _data
-    )
-        external
-        returns (bytes4);
-}
diff --git a/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Token.sol b/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Token.sol
deleted file mode 100644
index ac992c80d..000000000
--- a/packages/contracts/src/2.0.0/tokens/ERC721Token/IERC721Token.sol
+++ /dev/null
@@ -1,158 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-
-contract IERC721Token {
-
-    /// @dev This emits when ownership of any NFT changes by any mechanism.
-    ///      This event emits when NFTs are created (`from` == 0) and destroyed
-    ///      (`to` == 0). Exception: during contract creation, any number of NFTs
-    ///      may be created and assigned without emitting Transfer. At the time of
-    ///      any transfer, the approved address for that NFT (if any) is reset to none.
-    event Transfer(
-        address indexed _from,
-        address indexed _to,
-        uint256 indexed _tokenId
-    );
-
-    /// @dev This emits when the approved address for an NFT is changed or
-    ///      reaffirmed. The zero address indicates there is no approved address.
-    ///      When a Transfer event emits, this also indicates that the approved
-    ///      address for that NFT (if any) is reset to none.
-    event Approval(
-        address indexed _owner,
-        address indexed _approved,
-        uint256 indexed _tokenId
-    );
-
-    /// @dev This emits when an operator is enabled or disabled for an owner.
-    ///      The operator can manage all NFTs of the owner.
-    event ApprovalForAll(
-        address indexed _owner,
-        address indexed _operator,
-        bool _approved
-    );
-
-    /// @notice Transfers the ownership of an NFT from one address to another address
-    /// @dev Throws unless `msg.sender` is the current owner, an authorized
-    ///      perator, or the approved address for this NFT. Throws if `_from` is
-    ///      not the current owner. Throws if `_to` is the zero address. Throws if
-    ///      `_tokenId` is not a valid NFT. When transfer is complete, this function
-    ///      checks if `_to` is a smart contract (code size > 0). If so, it calls
-    ///      `onERC721Received` on `_to` and throws if the return value is not
-    ///      `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`.
-    /// @param _from The current owner of the NFT
-    /// @param _to The new owner
-    /// @param _tokenId The NFT to transfer
-    /// @param _data Additional data with no specified format, sent in call to `_to`
-    function safeTransferFrom(
-        address _from,
-        address _to,
-        uint256 _tokenId,
-        bytes _data
-    )
-        external;
-
-    /// @notice Transfers the ownership of an NFT from one address to another address
-    /// @dev This works identically to the other function with an extra data parameter,
-    ///      except this function just sets data to "".
-    /// @param _from The current owner of the NFT
-    /// @param _to The new owner
-    /// @param _tokenId The NFT to transfer
-    function safeTransferFrom(
-        address _from,
-        address _to,
-        uint256 _tokenId
-    )
-        external;
-
-    /// @notice Change or reaffirm the approved address for an NFT
-    /// @dev The zero address indicates there is no approved address.
-    ///      Throws unless `msg.sender` is the current NFT owner, or an authorized
-    ///      operator of the current owner.
-    /// @param _approved The new approved NFT controller
-    /// @param _tokenId The NFT to approve
-    function approve(address _approved, uint256 _tokenId)
-        external;
-
-    /// @notice Enable or disable approval for a third party ("operator") to manage
-    ///         all of `msg.sender`'s assets
-    /// @dev Emits the ApprovalForAll event. The contract MUST allow
-    ///      multiple operators per owner.
-    /// @param _operator Address to add to the set of authorized operators
-    /// @param _approved True if the operator is approved, false to revoke approval
-    function setApprovalForAll(address _operator, bool _approved)
-        external;
-
-    /// @notice Count all NFTs assigned to an owner
-    /// @dev NFTs assigned to the zero address are considered invalid, and this
-    ///      function throws for queries about the zero address.
-    /// @param _owner An address for whom to query the balance
-    /// @return The number of NFTs owned by `_owner`, possibly zero
-    function balanceOf(address _owner)
-        external
-        view
-        returns (uint256);
-
-    /// @notice Transfer ownership of an NFT -- THE CALLER IS RESPONSIBLE
-    ///         TO CONFIRM THAT `_to` IS CAPABLE OF RECEIVING NFTS OR ELSE
-    ///         THEY MAY BE PERMANENTLY LOST
-    /// @dev Throws unless `msg.sender` is the current owner, an authorized
-    ///      operator, or the approved address for this NFT. Throws if `_from` is
-    ///      not the current owner. Throws if `_to` is the zero address. Throws if
-    ///      `_tokenId` is not a valid NFT.
-    /// @param _from The current owner of the NFT
-    /// @param _to The new owner
-    /// @param _tokenId The NFT to transfer
-    function transferFrom(
-        address _from,
-        address _to,
-        uint256 _tokenId
-    )
-        public;
-
-    /// @notice Find the owner of an NFT
-    /// @dev NFTs assigned to zero address are considered invalid, and queries
-    ///      about them do throw.
-    /// @param _tokenId The identifier for an NFT
-    /// @return The address of the owner of the NFT
-    function ownerOf(uint256 _tokenId)
-        public
-        view
-        returns (address);
-
-    /// @notice Get the approved address for a single NFT
-    /// @dev Throws if `_tokenId` is not a valid NFT.
-    /// @param _tokenId The NFT to find the approved address for
-    /// @return The approved address for this NFT, or the zero address if there is none
-    function getApproved(uint256 _tokenId) 
-        public
-        view
-        returns (address);
-    
-    /// @notice Query if an address is an authorized operator for another address
-    /// @param _owner The address that owns the NFTs
-    /// @param _operator The address that acts on behalf of the owner
-    /// @return True if `_operator` is an approved operator for `_owner`, false otherwise
-    function isApprovedForAll(address _owner, address _operator)
-        public
-        view
-        returns (bool);
-}
diff --git a/packages/contracts/src/2.0.0/tokens/ERC721Token/MintableERC721Token.sol b/packages/contracts/src/2.0.0/tokens/ERC721Token/MintableERC721Token.sol
deleted file mode 100644
index bc5cd2cc2..000000000
--- a/packages/contracts/src/2.0.0/tokens/ERC721Token/MintableERC721Token.sol
+++ /dev/null
@@ -1,82 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-import "./ERC721Token.sol";
-
-
-contract MintableERC721Token is
-    ERC721Token
-{
-    /// @dev Function to mint a new token
-    ///      Reverts if the given token ID already exists
-    /// @param _to Address of the beneficiary that will own the minted token
-    /// @param _tokenId ID of the token to be minted by the msg.sender    
-    function _mint(address _to, uint256 _tokenId)
-        internal
-    {
-        require(
-            _to != address(0),
-            "ERC721_ZERO_TO_ADDRESS"
-        );
-
-        address owner = owners[_tokenId];
-        require(
-            owner == address(0),
-            "ERC721_OWNER_ALREADY_EXISTS"
-        );
-
-        owners[_tokenId] = _to;
-        balances[_to] = safeAdd(balances[_to], 1);
-
-        emit Transfer(
-            address(0),
-            _to,
-            _tokenId
-        );
-    }
-
-    /// @dev Function to burn a token
-    ///      Reverts if the given token ID doesn't exist
-    /// @param _owner Owner of token with given token ID
-    /// @param _tokenId ID of the token to be burned by the msg.sender
-    function _burn(address _owner, uint256 _tokenId)
-        internal
-    {
-        require(
-            _owner != address(0),
-            "ERC721_ZERO_OWNER_ADDRESS"
-        );
-
-        address owner = owners[_tokenId];
-        require(
-            owner == _owner,
-            "ERC721_OWNER_MISMATCH"
-        );
-
-        owners[_tokenId] = address(0);
-        balances[_owner] = safeSub(balances[_owner], 1);
-
-        emit Transfer(
-            _owner,
-            address(0),
-            _tokenId
-        );
-    }
-}
diff --git a/packages/contracts/src/2.0.0/tokens/EtherToken/IEtherToken.sol b/packages/contracts/src/2.0.0/tokens/EtherToken/IEtherToken.sol
deleted file mode 100644
index 9e2e68766..000000000
--- a/packages/contracts/src/2.0.0/tokens/EtherToken/IEtherToken.sol
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-import "../ERC20Token/IERC20Token.sol";
-
-
-contract IEtherToken is
-    IERC20Token
-{
-    function deposit()
-        public
-        payable;
-    
-    function withdraw(uint256 amount)
-        public;
-}
diff --git a/packages/contracts/src/2.0.0/tokens/EtherToken/WETH9.sol b/packages/contracts/src/2.0.0/tokens/EtherToken/WETH9.sol
deleted file mode 100644
index 17876b86d..000000000
--- a/packages/contracts/src/2.0.0/tokens/EtherToken/WETH9.sol
+++ /dev/null
@@ -1,758 +0,0 @@
-// Copyright (C) 2015, 2016, 2017 Dapphub
-
-// This program is free software: you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-
-// This program is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
-
-// You should have received a copy of the GNU General Public License
-// along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-// solhint-disable
-pragma solidity ^0.4.18;
-
-
-contract WETH9 {
-    string public name     = "Wrapped Ether";
-    string public symbol   = "WETH";
-    uint8  public decimals = 18;
-
-    event  Approval(address indexed _owner, address indexed _spender, uint _value);
-    event  Transfer(address indexed _from, address indexed _to, uint _value);
-    event  Deposit(address indexed _owner, uint _value);
-    event  Withdrawal(address indexed _owner, uint _value);
-
-    mapping (address => uint)                       public  balanceOf;
-    mapping (address => mapping (address => uint))  public  allowance;
-
-    function() public payable {
-        deposit();
-    }
-    function deposit() public payable {
-        balanceOf[msg.sender] += msg.value;
-        Deposit(msg.sender, msg.value);
-    }
-    function withdraw(uint wad) public {
-        require(balanceOf[msg.sender] >= wad);
-        balanceOf[msg.sender] -= wad;
-        msg.sender.transfer(wad);
-        Withdrawal(msg.sender, wad);
-    }
-
-    function totalSupply() public view returns (uint) {
-        return this.balance;
-    }
-
-    function approve(address guy, uint wad) public returns (bool) {
-        allowance[msg.sender][guy] = wad;
-        Approval(msg.sender, guy, wad);
-        return true;
-    }
-
-    function transfer(address dst, uint wad) public returns (bool) {
-        return transferFrom(msg.sender, dst, wad);
-    }
-
-    function transferFrom(address src, address dst, uint wad)
-        public
-        returns (bool)
-    {
-        require(balanceOf[src] >= wad);
-
-        if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) {
-            require(allowance[src][msg.sender] >= wad);
-            allowance[src][msg.sender] -= wad;
-        }
-
-        balanceOf[src] -= wad;
-        balanceOf[dst] += wad;
-
-        Transfer(src, dst, wad);
-
-        return true;
-    }
-}
-
-
-/*
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 3, 29 June 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-                            Preamble
-
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-software and other kinds of works.
-
-  The licenses for most software and other practical works are designed
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-software for all its users.  We, the Free Software Foundation, use the
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-any other work released this way by its authors.  You can apply it to
-your programs, too.
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-price.  Our General Public Licenses are designed to make sure that you
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diff --git a/packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol b/packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol
deleted file mode 100644
index f4855759c..000000000
--- a/packages/contracts/src/2.0.0/tokens/ZRXToken/ZRXToken.sol
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.11;
-
-// solhint-disable-next-line max-line-length
-import { UnlimitedAllowanceToken_v1 as UnlimitedAllowanceToken } from "../../../1.0.0/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol";
-
-
-contract ZRXToken is 
-    UnlimitedAllowanceToken
-{
-
-    // solhint-disable const-name-snakecase
-    uint8 constant public decimals = 18;
-    uint256 public totalSupply = 10**27; // 1 billion tokens, 18 decimal places
-    string constant public name = "0x Protocol Token";
-    string constant public symbol = "ZRX";
-    // solhint-enableconst-name-snakecase
-
-    function ZRXToken()
-        public
-    {
-        balances[msg.sender] = totalSupply;
-    }
-}