2008 Dec 11 - PiTiVi 0.11.3

 * Remove usage of gobject as much as possible from non-ui components
 * Make smarter choices about audio/video sinks 
 * Fix issues with seeking in ruler/viewer
 * general pylint cleanup
 * Picture support in the timeline
 * Improve viewer for proper Display Aspect Ratio
 * Timeline : Unlink-ing sources is now possible
 * Fix some issues when using very long sources
 * SourceList now detachable from main window
 * Now requires GNonLin 0.10.10 and python >= 2.5