v3.8.0: add package.xml

CMakeLists.txt

@@ -220,4 +220,6 @@ foreach (_variableName ${_variableNames})
     )
 endforeach()
 
+INSTALL(FILES package.xml DESTINATION share/${PROJECT_NAME})
+
 MESSAGE(STATUS "dynamic_graph_VERSION=${dynamic_graph_VERSION}")

package.xml

 <package format="2">
   <name>dynamic-graph</name>
-  <version>3.7.3</version>
+  <version>3.8.0</version>
   <description>
     Dynamic graph library
   </description>