2018.09.04 Version 1.2.1
* new controls
 - add TabControl
 - add ContextMenuButton
 - add ContextMenuToggleButton

* other
- update HandyControlDemo UI
- Localization

2018.09.04 Version 1.2.0
* new controls
 - add Growl
 - add AnimationPath
 - add TransitioningContentControl

* new style
 - add ProgressBar
 - add TreeView

* other
- update HandyControlDemo UI
- the ScrollViewer will auto hidden

2018.08.31 Version 1.1.2
* new controls
 - add CompareSlider

2018.08.30 Version 1.1.1
* new controls
 - add ScrollViewer

2018.08.27 Version 1.1.0

* new controls
 - add WindowBorderless
 - add ImageBrowser
 - add PopupWindow

* new styles
 - add Menu
 - add Window