Use new interface to Sets

Author: clue

tests/MaximumMatching/FlowTest.php

@@ -30,7 +30,7 @@ public function testSingleEdge()
         // correct number of edges
         $this->assertEquals(1, $alg->getNumberOfMatches());
         // actual edge instance returned
-        $this->assertEquals(array($edge), $alg->getEdges());
+        $this->assertEquals(array($edge), $alg->getEdges()->getVector());
 
         // check
         $flowgraph = $alg->createGraph();