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+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Changes
+
+## [3.0.0] - 2021-05-11
+
+### Changed
+
+- Migration to solidity 0.8
+- Removing SafeMath and OpenZeppelin
+- Removing "Library" suffix from library contracts names
+- [CartesiMath] New `ctz` and `clz` functions
+- [CartesiMath] Gas optimization
+- [Merkle] Bug fixes
+- [Merkle] Using CartesiMath as library
+
+### Added
+
+- [Bitmask] New library for keeping a bit mask efficiently
+
+## [2.0.1] - 2021-03-11
+
+### Changed
+
+- Fix packaging procedure
+
+## [2.0.0] - 2021-02-26
+
+### Added
+
+- Deployment to Avalanche
+
+### Changed
+
+- [CartesiMath] Convert to library
+
+## [1.0.0] - 2020-12-02
+
+### Changed
+
+- [Instantiator] Remove deactivate method
+
+### Added
+
+- Deployment to mainnet
+
+## [0.7.0] - 2020-11-26
+
+### Added
+
+- [WorkerManagerAuthManagerImpl] New implementation of WorkerManager and WorkerAuthManager in a single contract
+
+## [0.6.2] - 2020-11-24
+
+### Changed
+
+- [CartesiMath] Update outdated artifact
+
+## [0.6.1] - 2020-11-02
+
+### Changed
+
+- [CartesiMath] Update outdated artifact
+
+## [0.6.0] - 2020-11-02
+
+### Changed
+
+- [CartesiMath] Turning CartesiMath into an abstract contract
+- Dropping support for ropsten
+
+## [0.5.2] - 2020-11-02
+
+### Added
+
+- Add TypeChain typings to npm package content
+
+## [0.5.1] - 2020-11-02
+
+### Added
+
+- Add hardhat-deploy artifacts and lightweight abi
+
+## [0.5.0] - 2020-10-28
+
+### Changed
+
+- Migration to hardhat
+
+## [0.4.2] - 2020-09-15
+
+### Changed
+
+- [WorkerManager] Add isPending method
+
+## [0.4.1] - 2020-09-11
+
+### Added
+
+- Deployment to goerli
+
+## [0.4.0] - 2020-09-11
+
+### Changed
+
+- Migrate to solidity 0.7
+
+### Added
+
+- [WorkerManager] First implementation
+- Deployment to BSC
+
+## [0.3.0] - 2020-06-09
+
+### Changed
+
+- Migrate to solidity 0.6
+- Using OpenZeppelin and SafeMath
+- [CartesiMath] First implementation
+
+### Added
+
+- CI build
+
+## [0.2.1] - 2020-03-31
+
+### Change
+
+- Adjust network gas configuration
+
+## [0.2.0] - 2020-03-19
+
+### Added
+
+- Deployment to Matic
+
+## [0.1.1] - 2019-12-12
+
+### Changed
+
+- Cleanup project dependencies
+
+## [0.1.0] - 2019-12-09
+
+### Added
+
+- First public release
+
+[unreleased]: https://github.com/cartesi/solidity-util/compare/v3.0.0...HEAD
+[3.0.0]: https://github.com/cartesi/solidity-util/compare/v2.0.1...v3.0.0
+[2.0.1]: https://github.com/cartesi/solidity-util/compare/v2.0.0...v2.0.1
+[2.0.0]: https://github.com/cartesi/solidity-util/compare/v1.0.0...v2.0.0
+[1.0.0]: https://github.com/cartesi/solidity-util/compare/v0.7.0...v1.0.0
+[0.7.0]: https://github.com/cartesi/solidity-util/compare/v0.6.2...v0.7.0
+[0.6.2]: https://github.com/cartesi/solidity-util/compare/v0.6.1...v0.6.2
+[0.6.1]: https://github.com/cartesi/solidity-util/compare/v0.6.0...v0.6.1
+[0.6.0]: https://github.com/cartesi/solidity-util/compare/v0.5.2...v0.6.0
+[0.5.2]: https://github.com/cartesi/solidity-util/compare/v0.5.1...v0.5.2
+[0.5.1]: https://github.com/cartesi/solidity-util/compare/v0.5.0...v0.5.1
+[0.5.0]: https://github.com/cartesi/solidity-util/compare/v0.4.2...v0.5.0
+[0.4.2]: https://github.com/cartesi/solidity-util/compare/v0.4.1...v0.4.2
+[0.4.1]: https://github.com/cartesi/solidity-util/compare/v0.4.0...v0.4.1
+[0.4.0]: https://github.com/cartesi/solidity-util/compare/v0.3.0...v0.4.0
+[0.3.0]: https://github.com/cartesi/solidity-util/compare/v0.2.1...v0.3.0
+[0.2.1]: https://github.com/cartesi/solidity-util/compare/v0.2.0...v0.2.1
+[0.2.0]: https://github.com/cartesi/solidity-util/compare/v0.1.1...v0.2.0
+[0.1.1]: https://github.com/cartesi/solidity-util/compare/v0.1.0...v0.1.1
+[0.1.0]: https://github.com/cartesi/solidity-util/releases/tag/v0.1.0