qtile/qtile — pull request #341 by jrazik (2013-09-10 19:26:56+00:00)
Title: Add "popup" window when mouse is over a widgets of the bar 

These modifications mostly introduce a new class : NotifyWindow (notify_window.py)
Several smalls modification are made in almost all the files to handle pointer motion event and leave window event.
3 widgets are modified to use this new possibility: Clock, CurrentLayout and KeyboardLayout.
Those 3 widgets are also modified to introduce an icon mode besides the text mode.