message: Updated: implemented the slider tag.
diff: -dmc-slider.Slider
  - .Slider__groove
  - .Slider__bar
  - .Slider__knob
  +dmc-slider
  + .Slider__label(if="{ !!opts.label }") { opts.label }
  + .Slider__container(onTap="handleContainerTap" ref="touch" touchStart="{ handleContainerTouchEvent }" touchMove="{ handleContainerTouchEvent }" touchEnd="{ handleContainerTouchEvent }" mouseDown="{ handleContainerMouseEvent }" mouseOver="{ handleContainerMouseOver }" mouseOut="{ handleContainerMouseOut }")
  + .Slider__rail
  + .Slider__track(style="width: { displayRatio() }%;")
  + .Slider__knob(style="left: { displayRatio() }%;")
  + .Slider__knobInner
  + dmc-tooltip(if="{ isTooltipShown }" label="{ opts.number }")
  + .Slider__catcher(class="{ Slider__catcher--active: isActive }" mouseMove="{ handleContainerMouseEvent }" mouseUp="{ handleContainerMouseEvent }")
  script.
  + import '../../atoms/dmc-tooltip/index.tag';
  import script from './index';
  this.external(script);
  