Added mapValueToString property.
Slider tap bug fixed.
The slider can show first decimal value in tye thumb. Also converted the rendering of the min, max labels from method to its own widget.
A fluid design slider that works just like the [Slider] material widget.
Used to select from a range of values.
The fluid slider will be disabled if [onChanged] is null.
By default, a fluid slider will be as wide as possible, with a height of 60.0. When given unbounded constraints, it will attempt to make itself 200.0 wide.