v2.8.0

• Added: autoWidth #150

• Added: fractional number support for items/slideBy #217

• Improved: refine indexMax for fixedWidth and autoWidth

• Improved: add a new div to hide overflowed slides

• Fixed: an edgePadding calculation issue when slider has gutter

• Fixed: update navCurrentIndexCached at the right place

• Fixed: touch/mouseDrag for gallery mode #219

• Fixed: some other issues related to vpOuter, vpInner and more