* Page operations (creation, publishing, copying etc) are now logged via Python's ``logging`` framework; to configure this, add a logger entry for ``'wagtail'`` or ``'wagtail.core'`` to the ``LOGGING`` setup in your settings file.
* Signal handlers for ``wagtail.wagtailsearch`` and ``wagtail.contrib.wagtailfrontendcache`` are now automatically registered when using Django 1.7 or above.
* Added a Django 1.7 system check to ensure that foreign keys from Page models are set to ``on_delete=SET_NULL``, to prevent inadvertent (and tree-breaking) page deletions
Signal handlers for the ``wagtailsearch`` core app and ``wagtailfrontendcache`` contrib app are automatically registered when using Django 1.7. Calls to ``register_signal_handlers`` from your ``urls.py`` can be removed.