Wagtail

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* Elasticsearch 2 support (Karl Hobley)
* Added parameters to image tag to specify file type and JPEG compression level (Karl Hobley)
* Added support for AWS CloudFront in frontend cache invalidation module (Rob Moorman)
* Unpublishing a page now gives the option to unpublish subpages too (Jordi Joan)
* The ``|embed`` filter has been converted into a templatetag ``{% embed %}`` (Janneke Janssen)
* The `wagtailforms` module now provides a `FormSubmissionPanel` for displaying details of form submissions (João Luiz Lorencetti)
* The Wagtail version number can now be obtained as a tuple using `from wagtail import VERSION` (Tim Heap)
* `send_mail` logic has been moved from `AbstractEmailForm.process_form_submission` into `AbstractEmailForm.send_mail`. Now it's easier to override this logic (Tim Leguijt)
* Added `before_create_page`, `before_edit_page`, `before_delete_page` hooks (Karl Hobley)
* Updated font sizes and colors to improve legibility of admin menu and buttons (Stein Strindhaug)
* Added pagination to "choose destination" view when moving pages (Nick Smith, Žan Anderle)
* Added ability to annotate search results with score (Karl Hobley)
* Added ability to limit access to form submissions (Mikalai Radchuk)
* Added the ability to configure the number of days search logs are kept for (Stephen Rice)
* `SnippetChooserBlock` now supports passing the model name as a string (Nick Smith)
* Redesigned account settings / logout area in the sidebar for better clarity (Janneke Janssen)
* Pillow's image optimization is now applied when saving JPEG images (Karl Hobley)
* Fix: Migrations for wagtailcore and project template are now reversible (Benjamin Bach)
* Fix: Migrations no longer depend on wagtailcore and taggit's `__latest__` migration, logically preventing those apps from receiving new migrations (Matt Westcott)
* Fix: The default image format label text ('Full width', 'Left-aligned', 'Right-aligned') is now localized (Mikalai Radchuk)
* Fix: Text on the front-end 'password required' form is now marked for translation (Janneke Janssen)
* Fix: Text on the page view restriction form is now marked for translation (Luiz Boaretto)
* Fix: Fixed toggle behavior of userbar on mobile (Robert Rollins)
* Fix: Image rendition / document file deletion now happens on a post_delete signal, so that files are not lost if the deletion does not proceed (Janneke Janssen)
* Fix: "Your recent edits" list on dashboard no longer leaves out pages that another user has subsequently edited (Michael Cordover, Kees Hink, João Luiz Lorencetti)
* Fix: `InlinePanel` now accepts a `classname` parameter as per the documentation (emg36, Matt Westcott)
* Fix: Disabled use of escape key to revert content of rich text fields, which could cause accidental data loss (Matt Westcott)
* Fix: Setting `USE_THOUSAND_SEPARATOR = True` no longer breaks the rendering of numbers in JS code for InlinePanel (Mattias Loverot, Matt Westcott)
* Fix: Images / documents pagination now preserves GET parameters (Bojan Mihelac)
* Fix: Wagtail's UserProfile model now sets a related_name of ``wagtail_userprofile`` to avoid naming collisions with other user profile models (Matt Westcott)
* Fix: Non-text content is now preserved when adding or editing a link within rich text (Matt Westcott)
* Fix: Fixed preview when `SECURE_SSL_REDIRECT = True` (Aymeric Augustin)
* Fix: Prevent hang when truncating an image filename without an extension (Ricky Robinett)

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* Fix: Restore compatibility with django-debug-toolbar 1.5 (Matt Westcott)
* Fix: Edits to StreamFields are no longer ignored in page edits on Django >=1.10.1 when a default value exists (Matt Westcott)

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* Fix: Initial values of checkboxes on group permission edit form now are visible on Django 1.10 (Matt Westcott)

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* Added ``WAGTAIL_ALLOW_UNICODE_SLUGS`` setting to make Unicode support optional in page slugs (Matt Westcott)
* Fix: Wagtail's middleware classes are now compatible with Django 1.10's new-style middleware (Karl Hobley)
* Fix: The `Pages.can_create_at` method is now checked in the create page view (Mikalai Radchuk)
* Fix: Fixed regression on Django 1.10.1 causing Page subclasses to fail to use PageManager (Matt Westcott)
* Fix: ChoiceBlocks with lazy translations as option labels no longer break Elasticsearch indexing (Matt Westcott)
* Fix: The page editor no longer fails to load JavaScript files with ``ManifestStaticFilesStorage`` (Matt Westcott)
* Fix: Django 1.10 enables client-side validation for all forms by default, but it fails to handle all the nuances of how forms are used in Wagtail. The client-side validation has been disabled for the Wagtail UI (Matt Westcott)

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* Django 1.10 support
* Added the ``include_block`` template tag for improved StreamField template inclusion (Matt Westcott, Mikalai Radchuk)
* Page slugs now allow unicode on Django >= 1.9 (Behzad Nategh)
* Explorer sidebar menu now limits the displayed pages to the ones the user has permission for (Robert Rollins, Matt Westcott)
* Image upload form in image chooser now performs client side validation so that the selected file is not lost in the submission (Jack Paine)
* oEmbed URL for audioBoom was updated (Janneke Janssen)
* Remember tree location in page chooser when switching between Internal / External / Email link (Matt Westcott)
* `FieldRowPanel` now creates equal-width columns automatically if `col*` classnames are not specified (Chris Rogers)
* Form builder now validates against multiple fields with the same name (Richard McMillan)
* The 'choices' field on the form builder no longer has a maximum length (Johannes Spielmann)
* Multiple ChooserBlocks inside a StreamField are now prefetched in bulk, for improved performance (Michael van Tellingen, Roel Bruggink, Matt Westcott)
* Add new EmailBlock and IntegerBlock (Oktay Altay)
* Added a new FloatBlock, DecimalBlock and a RegexBlock (Oktay Altay, Andy Babic)
* Wagtail version number is now shown on the settings menu (Chris Rogers)
* Added a system check to validate that fields listed in `search_fields` are defined on the model (Josh Schneier)
* Added formal APIs for customizing the display of StructBlock forms within the page editor (Matt Westcott)
* `wagtailforms.models.AbstractEmailForm` now supports multiple email recipients (Serafeim Papastefanos)
* Added ability to delete users through Settings -> Users (Vincent Audebert; thanks also to Ludolf Takens and Tobias Schmidt for alternative implementations)
* Page previews now pass additional HTTP headers, to simulate the page being viewed by the logged-in user and avoid clashes with middleware (Robert Rollins)
* Added back buttons to page delete and unpublish confirmation screens (Matt Westcott)
* Recognise Flickr embed URLs using HTTPS (Danielle Madeley)
* Success message when publishing a page now correctly respects custom URLs defined on the specific page class (Chris Darko)
* Required blocks inside StreamField are now indicated with asterisks (Stephen Rice)
* Fix: Email templates and document uploader now support custom `STATICFILES_STORAGE` (Jonny Scholes)
* Fix: Removed alignment options (deprecated in HTML and not rendered by Wagtail) from `TableBlock` context menu (Moritz Pfeiffer)
* Fix: Fixed incorrect CSS path on ModelAdmin's "choose a parent page" view
* Fix: Prevent empty redirect by over-normalization (Franklin Kingma, Ludolf Takens)
* Fix: "Remove link" button in rich text editor didn't trigger "edit" event, leading to the change to sometimes not be persisted (Matt Westcott)
* Fix: `RichText` values can now be correctly evaluated as booleans (Mike Dingjan, Bertrand Bordage)
* Fix: wagtailforms no longer assumes an .html extension when determining the landing page template filename (kakulukia)
* Fix: Fixed styling glitch on bi-colour icon + text buttons in Chrome (Janneke Janssen)
* Fix: StreamField can now be used in an InlinePanel (Gagaro)
* Fix: StreamField block renderings using templates no longer undergo double escaping when using Jinja2 (Aymeric Augustin)
* Fix: RichText objects no longer undergo double escaping when using Jinja2 (Aymeric Augustin, Matt Westcott)
* Fix: Saving a page by pressing enter key no longer triggers a "Changes may not be saved message" (Sean Muck, Matt Westcott)
* Fix: RoutablePageMixin no longer breaks in the presence of instance-only attributes such as those generated by FileFields (Fábio Macêdo Mendes)
* Fix: The `--schema-only` flag on update_index no longer expects an argument (Karl Hobley)
* Fix: Added file handling to support custom user add/edit forms with images/files (Eraldo Energy)
* Fix: Placeholder text in modeladmin search now uses the correct template variable (Adriaan Tijsseling)
* Fix: Fixed bad SQL syntax for updating URL paths on Microsoft SQL Server (Jesse Legg)
* Fix: Added workaround for Django 1.10 bug https://code.djangoproject.com/ticket/27037 causing forms with file upload fields to fail validation (Matt Westcott)

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* Fix: Pin html5lib to version 0.999999 to prevent breakage caused by internal API changes (Liam Brenner)