Adding a SpinEdit / NumericUpDown Control to WPF

The NumericUpDown control is available in WinForms, and also should be in WPF. Especially since it is much easier to make custom styles for controls in WPF.
It is annoying to rebuild that control everytime you need it and can't reuse older code. Sure there are ready to use libraries like MahApps, but it should never be a requirement for basic controls to add a dependency. Even worse when you use style libraries like MaterialDesignInXaml which restyle many basic controls. (Yes, i know that an self-made problem)

I am suprised that there is no request issue open for this.
But yeah, would be happy to get that control.