Repositories that use GitHub Pages can now build and deploy from any branch. Publishing to the special gh-pages branch will still work the same as it always has, but you can now choose a different branch in your repository as the publishing source. This functionality also removes the hardcoded dependency on user and organization pages having a master branch.
GitHub Advisory Database now contains the full corpus of security advisories from the npm security database. More complete npm security data enables us to provide better Dependabot alerts and security updates. The npm security database will continue to publish advisories, but GitHub Advisory Database is now the source of truth for this data.