Make python decoder iterable

lib/python/labcomm2014/LabComm.py

@@ -973,6 +973,13 @@ class Decoder(Codec):
         self.reader.mark(value, decl)
         return (value, decl)
 
+    def __iter__(self):
+        while True:
+            try:
+                yield self.decode()
+            except EOFError:
+                break
+
     def create_object(self, name=None):
         if isinstance(self, primitive):
             result = None