- Refactor testing environment. Now using Hardhat, Ethers and Waffle. This should give players a better debugging experience, and allow them to familiarize with up-to-date JavaScript tooling for smart contract testing.
- New levels:
- Backdoor
- Climber
- Free Rider
- Puppet v2
- New integrations with Gnosis Safe wallets, Uniswap v2, WETH9 and the upgradebale version of OpenZeppelin Contracts.
- Tweaks in existing challenges after community feedback
- Upgraded most contracts to Solidity 0.8
- Changes in internal libraries around low-level calls and transfers of ETH. Now mostly using OpenZeppelin Contracts utilities.
- In existing Puppet and The Rewarder challenges, better encapsulate issues to avoid repetitions.
- Reorganization of some files
- Changed from
npmtoyarnas dependency manager
Initial version