v0.2.50..v0.2.51 changeset Change.h

diff --git a/hoot-core/src/main/cpp/hoot/core/algorithms/changeset/Change.h b/hoot-core/src/main/cpp/hoot/core/algorithms/changeset/Change.h
index bc1a053..7c1f4cd 100644
--- a/hoot-core/src/main/cpp/hoot/core/algorithms/changeset/Change.h
+++ b/hoot-core/src/main/cpp/hoot/core/algorithms/changeset/Change.h
@@ -64,6 +64,8 @@ public:
   void clearElement() { _element.reset(); }
   ConstElementPtr getPreviousElement() const { return _previousElement; }
 
+  bool operator==(Change other) const;
+
 private:
 
   ChangeType _type;