FIX: Make old-style tags.json compatible again

mopidy_pummeluff/actions/base.py

@@ -82,7 +82,7 @@ class Action:
         :rtype: dict
         '''
         data = {
-            'tag_class': self.__class__.__name__,
+            'action_class': self.__class__.__name__,
             'uid': self.uid,
             'alias': self.alias or '',
             'parameter': self.parameter or '',

mopidy_pummeluff/registry.py

@@ -48,6 +48,9 @@ class RegistryDict(dict):
         :return: The action
         :rtype: actions.Action
         '''
+        if 'tag_class' in item:
+            item['action_class'] = item.pop('tag_class')
+
         return item['uid'], cls.init_action(**item)
 
     @classmethod