BUGS

- Lower limit of axis may not properly restore from configuration file.
- Incomplete widget draw/refresh on Windows.
- Memory leak in panel mode on Windows. (To alleviate, hide Acquisition section during long measurement.

TODO

- Implement "Save config alongside data" and "Save screenshot alongside data".
- Make clear_buffer() available as a trigger function.
- Make sweep controls aware of "Pause GPIB" function.
- Implement --config command line option.
- Test older config files.
- GTK3 compatibility.
- Python 3 compatibility.