add FeralfileArtworkV4_2 contract

contracts/FeralfileArtworkV4_2.sol

@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.13;
+
+import { FeralfileExhibitionV4_1 } from "./FeralfileArtworkV4_1.sol";
+
+contract FeralfileExhibitionV4_2 is FeralfileExhibitionV4_1 {
+
+    error ArtworkEditionNotFound();
+
+    mapping(uint256 => string) public artworkParameters; // artworkEditionID => parameters as string
+
+    constructor(
+        string memory name_,
+        string memory symbol_,
+        bool burnable_,
+        bool bridgeable_,
+        address signer_,
+        address vault_,
+        address costReceiver_,
+        string memory contractURI_,
+        uint256[] memory seriesIds_,
+        uint256[] memory seriesMaxSupplies_
+    )
+        FeralfileExhibitionV4_1(
+            name_,
+            symbol_,
+            burnable_,
+            bridgeable_,
+            signer_,
+            vault_,
+            costReceiver_,
+            contractURI_,
+            seriesIds_,
+            seriesMaxSupplies_
+        )
+    {}
+
+    /// @notice Update the parameters of an edition to a new value
+    function updateArtworkParameters(uint256 tokenId, string calldata parameters)
+        external
+        onlyAuthorized
+    {
+        if (!_exists(tokenId)) {
+            revert ArtworkEditionNotFound();
+        }
+
+        artworkParameters[tokenId] = parameters;
+    }
+
+    /// @notice Get the parameters of an edition
+    function getArtworkParameters(
+        uint256 tokenId
+    ) public view virtual returns (string memory) {
+        if (!_exists(tokenId)) {
+            revert ArtworkEditionNotFound();
+        }
+
+        return artworkParameters[tokenId];
+    }
+}

contracts/FeralfileToken.sol

@@ -6,6 +6,8 @@ import { Authorizable } from "./Authorizable.sol";
 
 contract FeralfileToken is ERC20, Authorizable {
 
+     error InvalidOwnersAndAmounts();
+
     // Constructor to initialize the token with a name and symbol
     constructor(string memory name_, string memory symbol_) ERC20(name_, symbol_) {}
 
@@ -20,7 +22,10 @@ contract FeralfileToken is ERC20, Authorizable {
     /// @param owners An array of addresses to receive the minted tokens
     /// @param amounts An array of amounts of tokens to mint for each respective owner
     function batchMint(address[] calldata owners, uint256[] calldata amounts) external virtual onlyAuthorized {
-        require(owners.length == amounts.length, "FeralfileToken: owners and amounts length mismatch");
+        if (owners.length != amounts.length) {
+            revert InvalidOwnersAndAmounts();
+        }
+
         for (uint256 i = 0; i < owners.length; i++) {
             _mint(owners[i], amounts[i]);
         }