URLs for plugins are mandatory (closes # 322)

Change-Id: I1783930cf984850c95edb5f395e2e66ae90ed41e
diff --git a/Changes b/Changes
index 7b6227b..5a74a15 100644
--- a/Changes
+++ b/Changes
@@ -24,6 +24,7 @@
         - Don't send empty pipes and states via query param (diewald)
         - Fix access of iframe location in tutorials. (diewald)
         - Fix test that wrongly required SSL support. (diewald)
+        - URLs for plugins are mandatory (closes # 322; hebasta)
 
 0.58 2024-11-15
         - Cookie path is settable now (hebasta)