Lowered the default stopping epsilon.

dlib/svm/structural_track_association_trainer.h

@@ -343,7 +343,7 @@ namespace dlib
         {
             C = 100;
             verbose = false;
-            eps = 0.01;
+            eps = 0.001;
             num_threads = 2;
             max_cache_size = 5;
             learn_nonnegative_weights = false;

dlib/svm/structural_track_association_trainer_abstract.h

@@ -35,7 +35,7 @@ namespace dlib
             ensures
                 - #get_c() == 100
                 - this object isn't verbose
-                - #get_epsilon() == 0.01
+                - #get_epsilon() == 0.001
                 - #get_num_threads() == 2
                 - #get_max_cache_size() == 5
                 - #learns_nonnegative_weights() == false