Update demos and tests.
Tuikit documentation
====================
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Contents:
.. toctree::
:maxdepth: 3
application
eventsource
events
focus
redraw
colors
.. inheritance-diagram:: tuikit.application
tuikit.eventsource
tuikit.widget
tuikit.container
tuikit.window
tuikit.button
tuikit.label
tuikit.scrollbar
tuikit.textedit
tuikit.editfield
tuikit.editbox
tuikit.combobox
tuikit.menu
tuikit.menubar
tuikit.treeview