Added changelog and release notes for #429

CHANGELOG.txt

@@ -3,6 +3,7 @@ Changelog
 
 0.5 (xx.xx.20xx)
 ~~~~~~~~~~~~~~~~
+ * Explorer nav now rendered separately and fetched with AJAX when needed
  * Added decorator syntax for hooks
  * Replaced lxml dependency with html5lib, to simplify installation
 

docs/releases/0.5.rst

@@ -30,6 +30,14 @@ Core
  * The lxml library (used for whitelisting and rewriting of rich text fields) has been replaced with the pure-python html5lib library, to simplify installation.
 
 
+Admin
+-----
+
+ * Explorer nav now rendered separately and fetched with AJAX when needed.
+
+   This improves the general performance of the amdin interface for large sites.
+
+
 Bug fixes
 ~~~~~~~~~