Updates the ColorPicker's alpha component edit box to be percentage-based.
Features
- Added the MaskedTextBox.MatchedText property, which should be used for data binding since it doesn't include any prompt characters like the normal Text property can.
- Added the DateTimeEditBox.SetValueToTodayCommand property, that resets the Value to DateTime.Today when executed.
- Updated the ColorPicker's alpha component edit box to be percentage-based.