Refine wording of page & collection privacy using password is a shared password and should not be used for secure content (Rohit Sharma, Jake Howard)
Add RelatedObjectsColumn to the table UI framework (Matt Westcott)
Reduce memory usage when rebuilding search indexes (Jake Howard)
Bug fixes
Fix typo in __str__ for MySQL search index (Jake Howard)
Ensure that unit tests correctly check for migrations in all core Wagtail apps (Matt Westcott)
Documentation
Add contributing development documentation on how to work with a fork of Wagtail (Nix Asteri, Dan Braghis)
Maintenance
Move RichText HTML whitelist parser to use the faster, built in html.parser (Jake Howard)
Remove duplicate 'path' in default_exclude_fields_in_copy (Ramchandra Shahi Thakuri)
Update unit tests to always use the faster, built in html.parser & remove html5lib dependency (Jake Howard)
Adjust Eslint rules for TypeScript files (Karthik Ayangar)
Rename the React Button that only renders links (a element) to Link and remove unused prop & behavior that was non-compliant for aria role usage (Advik Kabra)