lib:
- handle checkout of trees which contain submodules by identifying and
ignoring such tree entries; requires a .ini config parser (from isakmpd?)
- make 'got update' perform a 3-way merge for modified files
tog:
- make diff view generate diffs in a background thread
- implement horizonal scrolling in all views
- implement horizonal split view mode
- make it possible to move between commit diffs with a single key press
- implement search feature