Merge pull request #137 from stdgraph/algorithms/tc

add missing include

Author: kdeweese

include/graph/algorithm/tc.hpp

@@ -14,6 +14,7 @@
  */
 
 #include "graph/graph.hpp"
+#include "graph/views/incidence.hpp"
 
 #ifndef GRAPH_TC_HPP
 #  define GRAPH_TC_HPP
@@ -71,4 +72,4 @@ size_t triangle_count(G&& g) {
 }
 } // namespace graph
 
-#endif //GRAPH_TC_HPP
+#endif //GRAPH_TC_HPP