rcu-0.2.2: CHANGELOG.markdown

## 0.2.2 [2018.02.06]
---------------------
* Include `HLint.hs` with the tarball distribution, fixing the `hlint`
  test suite.

## 0.2.1
* Support `doctest-0.12`

## 0.2
* Revamp `Setup.hs` to use `cabal-doctest`. This makes it build
  with `Cabal-2.0`, and makes the `doctest`s work with `cabal new-build` and
  sandboxes.

## 0
* Initial version