v0.2.55..v0.2.56 changeset EidMapper.h

diff --git a/hoot-core/src/main/cpp/hoot/core/conflate/network/EidMapper.h b/hoot-core/src/main/cpp/hoot/core/conflate/network/EidMapper.h
index a6c337b..65cb3bf 100644
--- a/hoot-core/src/main/cpp/hoot/core/conflate/network/EidMapper.h
+++ b/hoot-core/src/main/cpp/hoot/core/conflate/network/EidMapper.h
@@ -22,7 +22,7 @@
  * This will properly maintain the copyright information. DigitalGlobe
  * copyrights will be updated automatically.
  *
- * @copyright Copyright (C) 2016, 2018, 2019 DigitalGlobe (http://www.digitalglobe.com/)
+ * @copyright Copyright (C) 2016, 2018, 2019, 2020 DigitalGlobe (http://www.digitalglobe.com/)
  */
 #ifndef EIDMAPPER_H
 #define EIDMAPPER_H
@@ -34,6 +34,9 @@ class EidMapper
 {
 public:
 
+  EidMapper() = default;
+  virtual ~EidMapper() = default;
+
   /**
    * Map from one eid to another. This is most useful when EIDs are replaced during the merge
    * process.