make ConflictDetection constructor public

src/bk/ConflictDetection.java

@@ -19,7 +19,7 @@ public class ConflictDetection implements AlgorithmStage {
     private int l1;
     private PseudoCodeNode markNode;
     
-    ConflictDetection( LayeredGraphNode graph )
+    public ConflictDetection( LayeredGraphNode graph )
     {
         this.graph = graph;
         actions = new ArrayList<>();