Update changelog

CHANGELOG.md

@@ -4,6 +4,19 @@ All notable changes to this project will be documented in this file.
 The format is roughly based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [3.0.0] - 2018-03-18
+
+### Added
+
+- Automatic directory handling, autogenerate `out_path/0` and create the actual directory when task
+  runs.
+
+### Fixed
+
+- Possible issue killing AppRunner child on Windows.
+- Removed unused _fs_ config.
+- Dialyzer issues.
+
 ## [2.0.0] - 2017-08-21
 
 ### Changed

mix.exs

@@ -11,7 +11,7 @@ defmodule MBU.Mixfile do
       name: "MBU: Mix Build Utilities",
       docs: [
         main: "readme",
-        extras: ["README.md"],
+        extras: ["README.md", "CHANGELOG.md"],
         source_ref: @version,
         source_url: "https://gitlab.com/Nicd/mbu"
       ],