Form builder form submissions can now be deleted in bulk from the form submissions index page. This feature was sponsored by St John's College, Oxford and developed by Karl Hobley.
The ``get_context`` method on StreamField blocks now receives a ``parent_context`` keyword argument, consisting of the dict of variables passed in from the calling template. For example, this makes it possible to perform pagination logic within ``get_context``, retrieving the current page number from ``parent_context['request'].GET``. See :ref:`get_context on StreamField blocks <streamfield_get_context>`. This feature was developed by Mikael Svensson and Peter Baumgartner.
The welcome message on the admin dashboard has been updated to be more suitable for multi-tenanted installations. Users whose page permissions lie within a single site will now see that site name in the welcome message, rather than the installation-wide ``WAGTAIL_SITE_NAME``. As before, this message can be customised, and additional template variables have been provided for this purpose - see :ref:`custom_branding`. This feature was developed by Jeffrey Chau.
* The ``wagtailforms`` module now allows to define custom form submission model, add custom data to CSV export and some other customisations. See :doc:`/reference/contrib/forms/customisation` (Mikalai Radchuk)
* The Webpack configuration is now in a subfolder to declutter the project root, and uses environment-specific configurations for smaller bundles in production and easier debugging in development (Janneke Janssen, Thibaud Colas)
Previously, ``get_context`` methods on StreamField blocks returned a dict of variables which would be merged into the calling template's context before rendering the block template. ``get_context`` methods now receive a ``parent_context`` dict, and are responsible for returning the final context dictionary with any new variables merged into it. The old calling convention is now deprecated, and will be phased out in Wagtail 1.11.
In most cases, the method will be calling ``get_context`` on the superclass, and can be updated by passing the new ``parent_context`` keyword argument to it:
