Your code remains living in its original repo. To keep things easy, it'll support only GitHub repos at first, then any Git repo, then potentially other source control software.
I really like the multi-pane functionality and integration of shortcuts. A lot of interfaces use overly complex shortcuts for tasks that should be immediately accessible--being able to press 'r' and 'c' for a new row or column is great.
Looks like you have a good selection of languages being parsed as well. I can definitely see myself using this as a tool in future projects or when diving into a new codebase. Can't wait to see integration with online repositories.