Fix test with negative element in positional queries

Change-Id: I0c84e10e4007e51445ccac20fef344da27957fd5
diff --git a/Changes b/Changes
index 06d3996..eb05c00 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,4 @@
-0.55.7 2016-10-14
+0.55.7 2016-11-06
         - [bugfix] Throw error on optional operands in distance
           queries (diewald)
         - [performance] Remember solved problematic queries in the
@@ -11,6 +11,8 @@
         - [bugfix] Fixed paths in test suite for supporting
           spaces (margaretha)
         - [bugfix] Warn on empty elements in positional queries (diewald)
+        - [bugfix] Fix wrong deserialization test with negative element in
+          positional queries (diewald)
 
 0.55.6 2016-08-10
         - [bugfix] distance with key "t" uses default foundry (diewald)