OpenZeppelin Solidity Contracts v5.3 is here 🧑‍💻 This release introduces new token standards and governance improvements, along with new smart account and crosschain capabilities through the Community Contracts Library.Here's what's new 👇📝 Core Contracts HighlightsERC-6909 – New multi-token standard with:• Minimal implementation• Metadata support• Supply tracking• Content URI extensionGovernor Improvements:• New Proposal Guardian role• Added Sequential Proposal IDs• New Super Quorum mechanism❤️‍🩹 5.3 also packs quality-of-life upgrades such as: • trySafeTransfer() for ERC20s (no more surprise reverts) • clear() for EnumerableSet and EnumerableMap • MerkleTree.update() for dynamic leaf management • 512-bit and saturating math operations (add512, mul512, etc)🧪 Community Contracts UpdatesThe Community Contracts Library is home to more experimental and community-driven implementations, and now includes a new audited framework to develop ERC-4337 accounts with ERC-7579 modules, as well as new crosschain features.🔐 Production-Ready ERC-4337 Account Implementation, featuring flexible signature validation, including:• ECDSA• RSA• P256• ERC-7702 (yes, EOAs support!)🧩 Modular Account Features with ERC-7579• Support for fully pluggable modules: validators, executors, fallback handlers• Hook system for advanced customization• Batch execution support (ERC-7821)🌉 Cross-chain Capabilities• ERC-7786 Meta Gateway Aggregator• ERC-7802 Bridgeable Token Interfacehttps://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v5.3.0