Fixed major lazy loading bug in WithinSpans

Change-Id: I67f1cfb0c5fa2660c790bc9f3988a3db0d24af95
diff --git a/Changes b/Changes
index 250b625..d4676e8 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,4 @@
-0.55.4 2016-02-25
+0.55.4 2016-04-21
         - [bugfix] Wrap <base/s=t> boundaries around right extended queries
 	  (diewald)
 	- [bugfix] Lazy loading bug in WithinSpans (diewald)