Extend packages support (home-assistant#5425)

cdce8p · balloob · commit 313479464cb4 · 2018-05-25T16:42:08.000-04:00
diff --git a/source/_docs/configuration/packages.markdown b/source/_docs/configuration/packages.markdown
@@ -73,7 +73,7 @@ There are some rules for packages that will be merged:
     input_boolean:
       my_input:
     ```
-4. Any component that is not a platform [2], or dictionaries with Entity ID keys [3] cannot be merged and can only occur once between all packages and the main configuration.
+4. Any component that is not a platform [2], or dictionaries with Entity ID keys [3] can only be merged if its keys, except those for lists, are solely defined once.
 
 <p class='note tip'>
 Components inside packages can only specify platform entries using configuration style 1, where all the platforms are grouped under the component name.
