You can now access all of your issue and pull request subscriptions in one place on https://github.com/notifications/subscriptions.
Learn more about the subscription list
Deep link to pull request file filter
Pull request file filter selections are reflected in URLs, and files are collapsed/expanded instead of shown/hidden.
Learn more about filtering files in a pull request by file type
Any user with repository write permissions will now be able to click the `Ready for review` button on a draft pull request in order to enable mergeability.