add validation example to flyouts demo (for #968)
don't set to transparent on editable
Merge pull request #1069 from MahApps/1037-punker76-editable-combobox-background

fix for editable combobox background
Update XAML to make lower thumb really lower and Upper really upper.
- Made corresponded changes to correctly handle new behavior
- Fix MoveToPoint issues
- Code refactoring and optimizations
Update Metro.Demo for range Slider
Merge pull request #1072 from QuantumDeveloper/RangeSlider

Range slider V2.2