hackage-revdeps-0.4: CHANGELOG.md

## 0.4

* Yet another API overhaul, extending it with `ExtractDependenciesMode` argument.
* Collect dependencies from `build-tool-depends` too.
* `hackage-revdeps-history` now plots results.

## 0.3

* Another API overhaul.
* Enable seamless processing of `01-index.tar.gz` as well as `01-index.tar`.

## 0.2

* Overhaul the API.

## 0.1.1

* Replace dependency on `cabal-install-parsers` with `cabal-install` proper.

## 0.1

* Initial release.