The application can now display a Table of Content (TOC). The TOC is hidden by default. It can be displayed via entries in the "View" menu or by pressing Alt+C (Option+C on macOS) for a single document only or via Alt+Shift+C (Option+Shift+C on macOS) for all documents.
A bug regarding very wide tables as fixed. If a document was printed, wide tables could be cropped. See issue #26