Merge pull request #272 from kdbanman/GH-271

Fix one class svm to use shrinking heuristics.

Sources/Accord.MachineLearning/VectorMachines/Learning/OneclassSupportVectorLearning.cs

@@ -198,7 +198,7 @@ public TModel Learn(TInput[] x, double[] weights = null)
             var s = new FanChenLinQuadraticOptimization(alpha.Length, Q, zeros, ones)
             {
                 Tolerance = eps,
-                Shrinking = true,
+                Shrinking = this.shrinking,
                 Solution = alpha
             };