Move changelog entry from #8235 to the top [ci skip]

actionpack/CHANGELOG.md

 ## Rails 4.0.0 (unreleased) ##
 
+*   Introduce `ActionView::Template::Handlers::ERB.escape_whitelist`. This is a list
+    of mime types where template text is not html escaped by default. It prevents `Jack & Joe`
+    from rendering as `Jack & Joe` for the whitelisted mime types. The default whitelist
+    contains text/plain. Fix #7976
+
+    *Joost Baaij*
+
 *   Fix input name when `:multiple => true` and `:index` are set.
 
     Before:
@@ -43,13 +50,6 @@
 
     *Josh Peek*
 
-*   Introduce `ActionView::Template::Handlers::ERB.escape_whitelist`. This is a list
-    of mime types where template text is not html escaped by default. It prevents `Jack & Joe`
-    from rendering as `Jack & Joe` for the whitelisted mime types. The default whitelist
-    contains text/plain. Fix #7976
-
-    *Joost Baaij*
-
 *   `assert_template` can be used to assert on the same template with different locals
     Fix #3675