Implemented gradient clipping.

climax/main/config.py

@@ -113,7 +113,8 @@ TRAIN_CONFIG = {
     'early_stop': True,
     'patience': 50,
     'multi_gpu': True,
-    'classification': False
+    'classification': False,
+    'clip_gradients': True
     }
 
 # whether to overwrite existing models