v2.1.0

Bug Fixes

• scroll: fix bigger-move-h (#4) (497c830)
• scroll.css: 修复横向滚动到最左边差20像素的问题。(#17) (23e8df0)
• scroll.uve: fix scrolltop and scrollLeft bug.(#18) (d44ac05)

Features

• scroll event: support vertical-start,vertical-end,horizontal-start,horizontal-end events. (ac5645d)
• scroll min-length: support min length. (#13) (5c77332)