Presentation:
* Improve presentation for sliders.
* Presentation for a watched object is not interrupted anymore by the
presentation for focus tracking.
Miscelaneous:
* Generate a beep instead of exiting in case of failure to register a
listener for an event.
Speech:
* Change values for rate and pitch for voice from percents to absolute
values (including minimum and maximum in UI.
Brlmon:
* Make brlmon to act as a panel (do not let other window to overlap it).
Magnifier:
* Make zoom factor x and y floats from int.
