add clear

appletree/share.py

@@ -39,6 +39,11 @@ def __setitem__(self, key, value):
 _cached_functions = StaticValueDict()
 
 
+def clear(cache):
+    _cached_configs.clear()
+    _cached_functions.clear()
+
+
 def set_global_config(configs):
     """Set new global configuration options.