Update changelog (release)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index dfb0d3051600678662e65949f0afed113e440443..6ab28770e8426833ffa965c6ba49db8bae7e25be 100644 (file)
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@ The format is based on [Keep a Changelog][] and this project adheres to
 [Semantic Versioning]: http://semver.org/
 
 ## Unreleased
+
+## 0.4.0 - 2019-03-15
 ### Added
 - Jiri's updates (some files in playground changed).