Expanding context in diffs

GitHub has introduced a new feature aimed at enhancing the code review process by allowing users to expand the context around code changes. Traditionally, only three lines of context are shown in a diff, but with the new "unfold" button, users can click to reveal additional lines of context, even up to the entire file, if needed. This feature is available in any area where diffs are rendered, providing a more comprehensive view of code changes for both public and private projects. This improvement is designed to facilitate a deeper understanding of code modifications, thereby improving the review process.