Add changelog for fileinstall

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1664265 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/fileinstall/doc/changelog.txt b/fileinstall/doc/changelog.txt
index b58a8ef..80e3893 100644
--- a/fileinstall/doc/changelog.txt
+++ b/fileinstall/doc/changelog.txt
@@ -1,3 +1,9 @@
+Version 3.5.0
+-------------
+** New Feature
+    * [FELIX-4759] - Support env:XXX subtitution for environment variables
+    * [FELIX-4760] - Support default/alternate values for variable substitution
+
 Version 3.4.2
 -------------
 ** Bug