set EIP875 to last call and correct errors (#1549)

EIPS/eip-875.md

@@ -1,9 +1,10 @@
 ---
 eip: 875
-title: A better NFT standard
+title: Simpler NFT standard with batching and native atomic swaps
 author: Weiwu Zhang <a@colourful.land>, James Sangalli <j.l.sangalli@gmail.com>
 discussions-to: https://github.com/ethereum/EIPs/issues/875
-status: Draft
+status: Last Call
+review-period-end: 2019-07-29
 type: Standards Track
 category: ERC
 created: 2018-02-08
@@ -63,7 +64,18 @@ Some protections need to be added to the message such as encoding the chain id,
 ## Interface
 
 ```
-contract ERC875
+contract ERC165 
+{
+            /// @notice Query if a contract implements an interface
+            /// @param interfaceID The interface identifier, as specified in ERC-165
+            /// @dev Interface identification is specified in ERC-165. This function
+            ///  uses less than 30,000 gas.
+            /// @return `true` if the contract implements `interfaceID` and
+            ///  `interfaceID` is not 0xffffffff, `false` otherwise
+            function supportsInterface(bytes4 interfaceID) external view returns (bool);
+}
+
+interface ERC875 /* is ERC165 */
 {
   event Transfer(address indexed _from, address indexed _to, uint256[] tokenIndices);
 
@@ -72,11 +84,17 @@ contract ERC875
   function balanceOf(address _owner) public view returns (uint256[] _balances);
   function transfer(address _to, uint256[] _tokens) public;
   function transferFrom(address _from, address _to, uint256[] _tokens) public;
+}
 
-  //optional
-  //function totalSupply() public constant returns (uint256 totalSupply);
-  function trade(uint256 expiryTimeStamp, uint256[] tokenIndices, uint8 v, bytes32 r, bytes32 s) public payable;
-  //function ownerOf(uint256 _tokenId) public view returns (address _owner);
+//If you want the standard functions with atomic swap trading added
+interface ERC875WithAtomicSwapTrading is ERC875 {
+    function trade(
+        uint256 expiryTimeStamp, 
+        uint256[] tokenIndices,
+        uint8 v, 
+        bytes32 r, 
+        bytes32 s
+    ) public payable;
 }
 ```