Effects -> EffectRegistry to clearly separate this class from others

Author: einarf

demosys/effects/registry.py

@@ -6,7 +6,7 @@
 from demosys.effects.effect import Effect
 
 
-class Effects:
+class EffectRegistry:
     """
     Registry for effects classes (not instances).
 
@@ -207,4 +207,4 @@ class EffectError(Exception):
     pass
 
 
-effects = Effects()
+effects = EffectRegistry()