[Dotenv] Add a BC break note

voronkovich · nicolas-grekas · commit 66621cc559b0 · 2017-09-05T09:59:31.000+02:00
diff --git a/src/Symfony/Component/Dotenv/CHANGELOG.md b/src/Symfony/Component/Dotenv/CHANGELOG.md
@@ -4,4 +4,5 @@ CHANGELOG
 3.3.0
 -----
 
+ * [BC BREAK] Since v3.3.7, the latest Dotenv files override the previous ones. Real env vars are not affected and are not overridden.
  * added the component
