Adding support for future migration to __init__.py

v1.2.0 will migrate `Door`->`PorchlightAdapter` and
`Neighborhood`->`PorchlightMediator`. For information about that change,
you'll need to see the eventual issue ticket/pull request for that.

porchlight/__init__.py

@@ -13,14 +13,19 @@
 the |porchlight| :doc:`quickstart` guide
 
 """
+import logging
 import os
 
 from .door import Door
 from .neighborhood import Neighborhood
 from .param import Param
 
 
-# Initialize logging
-import logging
+# Aliases for migration to generic names, >=v1.2.0.
+PorchlightAdapter = Door
+PorchlightMediator = Neighborhood
+
 
+# Initialize logging with a NullHandler to let user decide on a handler if they
+# so choose.
 logging.getLogger(__name__).addHandler(logging.NullHandler())