## 0.3.1

- Update the pubspec repository field to reflect the repo move.

## 0.3.0

- Add a closed state to `Mailbox`.

## 0.2.0

- Lower SDK lower bound to 3.0.0.

## 0.1.0

- Initial version.
- Expose `Mutex` and `ConditionVariable`
- Implement `Mailbox`.
