Introducing NumericUpDown
Added Style
Format  Style xaml
Added NumericUpDown to Controls.xaml
Added to .project file of .NET4 and .NET45
Added example to MainWindow
Format Code
Fixed an issue with .NET45 project (accidently referenced the .NET40 project
IncrementValue and DecrementValue events had wrong RoutedEvent
Due to a limitation with Windows' windowing system, we can not change AllowsTransparency after a window has loaded. Fixes #853
Merge pull request #855 from Amrykid/metrowindow-from-code-transparency-bug

Allow MetroWindows from code, no glowing border, however.
Added a Glow to the CleanWindowDemo.
Moved NumericUpDown Style to Theme folder
Added NumericUpDown to Generic.xaml
Changed TargetType of ChromelessButtonTemplate and ChromelessButtonStyle to ButtonBase in order to be able to use it for RepeatButtons
Added DependencyProperty for TextAlignment.
Changed Up and Down buttons to match MahApps style
XAML aligned
Removed all Debug.WriteLine
Merge pull request #846 from xxMUROxx/feature/NumericUpDown

Control: NumericUpDown