New features in version 3.4
===========================

- Enable continuous box duplication for periodic systems.
- Implementation of masking effect of planes on surfaces as
  for the possibility of periodic translations.
- Use XDG specifications for config files.
- Add a preview in the Open dialog.
- Improved input file support with the XSF plug-in or the ABINIT plug-in.
- Support of GtkGlExt as a possible rendering widget.
