lightweight window and compositing manager (shared library)

 Muffin is a small window manager performing compositing as well based on
 GTK+ and Clutter and used in desktop environment such as Cinnamon.
 .
 It is fairly extensible by the mean of plugins, providing new or customized
 visual effects as well as a flexibility in the behavior of the window
 manager.
 .
 This package contains the window manager shared library, used by muffin
 itself, and Cinnamon.