Release v0.4.0

Author: Francis Secada

CHANGELOG.md

@@ -0,0 +1,13 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+## [0.4.0] - YYYY-MM-DD
+
+### Added
+- Added CHANGELOG.md
+
+### Changed
+- Bumped version to 0.4.0
+- Fixed README testing section placeholder
+- Updated roadmap (marked TDB done)