Add one more empty line between progress reports.

src/learn/learn.cpp

@@ -903,6 +903,10 @@ namespace Learner
                     << " , learn_entropy = " << learn_sum_entropy / done
                     << endl;
             }
+
+            // Bigger space between progress reports so that they can be more
+            // easly disinguished. Looking for timestamps is hard.
+            cout << endl;
         }
         else
         {