v0.3.0

package.xml

 <package>
   <name>dynamic_graph_bridge_msgs</name>
-  <version>0.2.0</version>
+  <version>0.3.0</version>
   <description>
     Dynamic graph bridge messages and services.
   </description>
   <maintainer email="ostasse@laas.fr">Olivier Stasse</maintainer>
   <author>Pierre Gergondet</author>
-  
+
   <license>BSD</license>
   <url>https://ros.org/wiki/dynamic_graph_bridge_msgs</url>