Update date for 1.18.0 release

Nyholm · web-flow · commit 027dff799d50 · 2020-03-30T09:21:02.000+02:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 The change log describes what is "Added", "Removed", "Changed" or "Fixed" between each release.
 
-## 1.18.0 - unreleased
+## 1.18.0 - 2020-03-30
 
 ### Added
 
