# Version 1.3.0
- Remove the dependency on the `once_cell` crate to restore the MSRV. (#30)
# Version 1.2.0
- Return `Task` from `unblock` instead of returning opaque type. (#25)
# Version 1.1.0
- Add an environment variable to customize the maximum number of threads. (#21)
# Version 1.0.2
- Update `futures-lite`.
# Version 1.0.1
- Use `async-task`.
# Version 1.0.0
- Stabilize.
# Version 0.6.1
- Add probabilistic yielding to improve fairness.
# Version 0.6.0
- Remove the `unblock!` macro.
# Version 0.5.2
- Implement `Sync` for `Unblock`.
# Version 0.5.1
- Add `Unblock::with_capacity()`.
- Add `unblock()` function.
- An optimization in task spawning.
# Version 0.5.0
- Simplify the API to just `unblock!` and `Unblock`.
# Version 0.4.7
- Simplify dependencies for faster compilation.
# Version 0.4.6
- Update doc comment on `Unblock`.
# Version 0.4.5
- Implement `AsyncSeek`/`Seek` for `Unblock`/`BlockOn`.
# Version 0.4.4
- Remove the initial poll in block_on that caused lost wakeups.
# Version 0.4.3
- Fix a bug where a closed `Receiver` causes panics.
# Version 0.4.2
- Start thread numbering from 1.
# Version 0.4.1
- Attach names to spawned threads.
# Version 0.4.0
- Remove `Future` impl for `Blocking`.
- Add `unblock()`.
- Rename `blocking!` to `unblock!`.
- Rename `Blocking` to `Unblock`.
- Add `block_on()`, `block_on!`, and `BlockOn`.
# Version 0.3.2
- Make `Blocking` implement `Send` in more cases.
# Version 0.3.1
- Add `Blocking::with_mut()`.
# Version 0.3.0
- Remove `Blocking::spawn()`.
- Implement `Future` for `Blocking` only when the inner type is a `FnOnce`.
# Version 0.2.0
- Initial version
# Version 0.1.0
- Reserved crate name