unliftio-0.1.1.0: ChangeLog.md

## 0.1.1.0

* Doc improvements.
* Fix `UnliftIO.Chan` type signatures [#3](https://github.com/fpco/unliftio/pull/3).
* Add `UnliftIO.Concurrent` module [#5](https://github.com/fpco/unliftio/pull/5).

## 0.1.0.0

* Initial release.