Fixed use of s-layer for structs

Change-Id: I8da43fe43bc6006cdd99f2694ba20e3d6392481e
diff --git a/Changes b/Changes
index c21f150..c565ebe 100644
--- a/Changes
+++ b/Changes
@@ -1,6 +1,8 @@
 0.55.2 2016-02-13
         - [bugfix] Fixed support for corpus and doc IDs containing
-	  dashes (diewald)       
+	  dashes (diewald)
+	- [bugfix] Support "s" layer without meaning "surface" -
+	  this is a hack (diewald)
 
 0.55.1 2016-02-10
         - [bugfix] Fixed attribute serialization in MatchInfo (diewald)