# 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
### Added
### Changed
### Fixed
# [0.7.2] - 2026-07-13
### Fixed
- Unsoundness in `Once::force_into_inner`, `Once::try_into_inner`, and
`Once::into_inner_unchecked`. Thanks to `@Poseidon` for catching this.
# [0.7.1] - 2021-01-12
### Fixed
- Prevented `Once` leaking the inner value upon drop
# [0.7.0] - 2020-10-18
### Added
- `Once::initialized`
- `Once::get_mut`
- `Once::try_into_inner`
- `Once::poll`
- `RwLock`, `Mutex` and `Once` now implement `From<T>`
- `Lazy` type for lazy initialization
- `TicketMutex`, an alternative mutex implementation
- `std` feature flag to enable thread yielding instead of spinning
- `Mutex::is_locked`/`SpinMutex::is_locked`/`TicketMutex::is_locked`
- `Barrier`
### Changed
- `Once::wait` now spins even if initialization has not yet started
- `Guard::leak` is now an associated function instead of a method
- Improved the performance of `SpinMutex` by relaxing unnecessarily conservative
ordering requirements
# [0.6.0] - 2020-10-08
### Added
- More dynamic `Send`/`Sync` bounds for lock guards
- `lock_api` compatibility
- `Guard::leak` methods
- `RwLock::reader_count` and `RwLock::writer_count`
- `Display` implementation for guard types
### Changed
- Made `Debug` impls of lock guards just show the inner type like `std`