# Releases
## Release `0.2.0`
- fixes internal soundness issues (e.g. one similar to
https://github.com/rust-lang/rust/pull/65719)
- renames `OnceCell::new` to `OnceCell::uninit` and `OnceCell::initialized` to
`OnceCell::new`
- adds some convenience trait implementations and tightens some trait bounds
(breaking)
- improved internal code structure and code re-usage, better facilitates
monomorphic code usage
### Release `0.2.1`
- updates docs to explicitly specify the concrete synchronization guarantees
## Release `0.3.0`
- mostly internal refactorings
- adds the `noblock` module containing types which only allow non-blocking
initialization
- `raw` is renamed to `doc` and hidden from documentation, but linked to from
within the docs
- the `Spin` marker type is no longer exported
### Release `0.3.1`
- fixes an apparent regression, requiring a new compiler than the stated 1.36.0