Changelog

2.2.0, Celo variant (2024-04-08)

Add ICeloGasToken and IFiatTokenFeeAdapter per Celo documentation
Add FiatTokenFeeAdapterProxy and FiatTokenFeeAdapterV1 to support USDC as gas on Celo
Implement debitGasFees and creditGasFees in FiatTokenCeloV2_2

2.2.0 (2023-11-09)

Add ERC-1271 signature validation support to EIP-2612 and EIP-3009 functions
Combine the balance state and the blacklist state for an address in a balanceAndBlacklistStates map to reduce gas usage
Update DOMAIN_SEPARATOR to be a dynamic value
Remove notBlacklisted modifiers for approve, increaseAllowance, decreaseAllowance and permit
Enable bypassing TIMESTAMP opcode in permit by using uint256.max

2.1.1 (2021-06-03)

Add the multi-issuer minter contracts from the multi-issuer branch

2.1.0 (2021-02-17)

Move locked USDC to a "lost and found" address and blacklists itself so that accidental sends will no longer be possible
Conform to EIP-3009 in FiatToken
- Add receiveWithAuthorization
- Remove approveWithAuthorization, increaseAllowanceWithAuthorization and decreaseAllowanceWithAuthorization

2.0.0 (2020-07-30)

Add support for EIP-2612 in FiatToken
Add transferWithAuthorization, approveWithAuthorization, increaseAllowanceWithAuthorization, decreaseAllowanceWithAuthorization to enable ETH-less transactions
Add increaseAllowance and decreaseAllowance to mitigate the multi-withdrawal attack vulnerability in ERC-20 approve function
Update Solidity version to 0.6.12

1.1.0 (2020-05-27)

Add Rescuable functionalities to FiatToken
Update Solidity version to 0.6.8
Remove ifAdmin modifier from admin() and implementation() in FiatTokenProxy

1.0.0 (2018-07-24)

Create ERC-20 compliant FiatToken contract
Add Ownable, Pausable and Blacklistable functionalities to FiatToken
Create FiatTokenProxy contracts based on Zeppelinos's Unstructured-Storage Proxy pattern