0.6.2
-----
* `contravariant` 1.0 support

0.6.1
-----
* Fixed bugs in several of the `Arrow` instances.

0.6
---
* Lazier `R1`.
* `MonadZip` instances

0.5.1
-----
* Lazier `R`.

0.5.0.1
-------
* Restore compatibility with GHC < 7.8

0.5
---
* `lens` 4 compatibility

0.1
---
* Repository Initialized