collection bindings
Merge remote-tracking branch 'upstream/master'

Conflicts:
	WpfApplication1/MainWindow.xaml
	WpfApplication1/MainWindow.xaml.cs
	WpfApplication1/WpfApplication1.csproj
ui changes
add annotations
Merge remote-tracking branch 'refs/remotes/ilshat/master'
WPF for .net 4.0
Merge remote-tracking branch 'refs/remotes/ilshat/master'
delete attribute bug fix
add annotation element