In this document I have listed all the Pull Requests that I have worked on during the summer. The link to all my Pull Requests and the commits merged is also added at the end of the document.
My summer with Zulip was spent majorly on introducing SCSS nesting and other SCSS features in current stylesheets. Here's the issue to keep track of this particular project: #12528 (css: Use SCSS nesting in stylesheets.)
All the relevant PRs are listed below (closed and merged):