CMTAT v2.5.0

[rya-sge]

Features

• Add ERC-1643 (part of ERC-1400) for document management through an optional external contract called DocumentEngine (not yet available) Add ERC-1643 support #267
• Externalize the Debt and CreditEvent module to an optional external contract called DebtEngine (not yet available) Add DebtEngine #271
• CMTAT version compatible with UUPS proxy : more gas efficient than Transparent Proxy + no need of a proxy admin contract. See Upgradable Smart Contracts | What is a Smart Contract Proxy Pattern? Add UUPS proxy support #270
• Remove flag attribute, present since v2.3.0, which was not really used. Remove flag attribute[Idea] #266

Technical

• Change Solidity version to 0.8.27 (latest)
• Change EVM version to Cancun
• Remove truffle from dependencies, replaced by Hardhat. See Consensys Announces the Sunset of Truffle and Ganache and New Hardhat Partnership
• Proxy Factory
  • use create2 with the library Create2 from OpenZeppelin
  • Factory available for Transparent, Beacon and UUPS proxy
• Implement ERC-7201 to manage memory to reduce memory collision when upgrading a proxy to a new implementation. Use erc-7201 for namespace #272
• Compact initialize function argument. See https://github.com/CMTA/CMTAT/blob/dev/contracts/modules/CMTAT_BASE.sol#L59