Merge branch 'iterable_sequences' into 'master'

make sequences iterable

See merge request !2

hrevolve/basic_functions.py

@@ -199,6 +199,9 @@ class Sequence:
             else:
                 return self.concat_sequence(self.concat).__repr__()
 
+    def __iter__(self):
+        return iter(self.concat_sequence(self.concat))
+
     def canonical(self):
         if self.function.name == "Disk-Revolve":
             concat = 2