Match IERC721 function order with EIP spec (#3287)

contracts/token/ERC721/IERC721.sol

@@ -38,6 +38,26 @@ interface IERC721 is IERC165 {
      */
     function ownerOf(uint256 tokenId) external view returns (address owner);
 
+    /**
+     * @dev Safely transfers `tokenId` token from `from` to `to`.
+     *
+     * Requirements:
+     *
+     * - `from` cannot be the zero address.
+     * - `to` cannot be the zero address.
+     * - `tokenId` token must exist and be owned by `from`.
+     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
+     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
+     *
+     * Emits a {Transfer} event.
+     */
+    function safeTransferFrom(
+        address from,
+        address to,
+        uint256 tokenId,
+        bytes calldata data
+    ) external;
+
     /**
      * @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
      * are aware of the ERC721 protocol to prevent tokens from being forever locked.
@@ -93,15 +113,6 @@ interface IERC721 is IERC165 {
      */
     function approve(address to, uint256 tokenId) external;
 
-    /**
-     * @dev Returns the account approved for `tokenId` token.
-     *
-     * Requirements:
-     *
-     * - `tokenId` must exist.
-     */
-    function getApproved(uint256 tokenId) external view returns (address operator);
-
     /**
      * @dev Approve or remove `operator` as an operator for the caller.
      * Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
@@ -115,29 +126,18 @@ interface IERC721 is IERC165 {
     function setApprovalForAll(address operator, bool _approved) external;
 
     /**
-     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
+     * @dev Returns the account approved for `tokenId` token.
      *
-     * See {setApprovalForAll}
+     * Requirements:
+     *
+     * - `tokenId` must exist.
      */
-    function isApprovedForAll(address owner, address operator) external view returns (bool);
+    function getApproved(uint256 tokenId) external view returns (address operator);
 
     /**
-     * @dev Safely transfers `tokenId` token from `from` to `to`.
-     *
-     * Requirements:
-     *
-     * - `from` cannot be the zero address.
-     * - `to` cannot be the zero address.
-     * - `tokenId` token must exist and be owned by `from`.
-     * - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
-     * - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
+     * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
      *
-     * Emits a {Transfer} event.
+     * See {setApprovalForAll}
      */
-    function safeTransferFrom(
-        address from,
-        address to,
-        uint256 tokenId,
-        bytes calldata data
-    ) external;
+    function isApprovedForAll(address owner, address operator) external view returns (bool);
 }