1. add mvc backend to git.
2. uiloader helper was finished.
1. gtk get_object should be assigned first before signal connection.
2. signal connection for gtk was tested.
try traits which would be selected as main signal framework.
return object name of root qt ui file.
try to add custom widget support to qt.
todo: test it.
remove dependency between view class and ui library.
patch plus
remove signal connection temprarily.
mvp draft.
move uiloader to view.
entry should be focusable and editable.
1.make spinbutton available.

2.complete the simple framework.
remove qt related from gtkview test.
move to Trats library, where Gtk's import must be laid before Traits'.
basic easy_bind function is almost done.

custom widget should be tested recently.
remove redundant files
add and test gtk custom widget.
Todo: solve problem of using custom widget in glade.
try to add qt custom widget in ui file, however it is not working currently.
remove dependency on expect & eventize
custom widget added by qtdesigner.
add qt custom widget support.