Some cleanup

Doc/changelog.docu

@@ -18,6 +18,7 @@
 <ul>
 <li>TriConnectivity: Added two functions split_edge and split_edge_copy to mask the PolyConnectivity functions of the same name (Prevents creation of valence 2 vertices on trimeshes)</li>
 <li>PolyConnectivity: Fixed PolyConnectivity is_collapse_ok, missing some configurations (Thanks to Simon Flöry for the patch)</li>
+<li>Connectivity type is now set at compile time</li>
 </ul>
 
 <b>IO</b>

src/OpenMesh/Core/Mesh/Tags.hh

@@ -39,8 +39,7 @@
  *                                                                           *
  * ========================================================================= */
 
-#ifndef OPENMESH_TAGS_HH
-#define OPENMESH_TAGS_HH
+#pragma once
 
 namespace OpenMesh {
 
@@ -51,4 +50,3 @@ struct TriConnectivityTag {};
 
 } // namespace OpenMesh
 
-#endif