[Breaking Change] Re-design and refactor, almost a new UI component.
#147 fix style conflicts with rc-tooltip @benjycui
#145 fix onChange
will be triggered while mousemove @Fuzzyma
#133 support multi-range (@sosz)
#18 add vertical
props (@wnlee)
...
#8 add isIncluded
props (@simaQ)
#7 add tooltip for handler when slider has no marks
props (@simaQ)