v2.1.0

Bug Fixes

• core: don't dispatch 'scroll' or 'scrollEnd' event when content DOM is not moved
• wheel: add restorePosition api, wheelIndexChanged event, close #1103
• nested-scroll: refactor nested-scroll, support multi-nested scroll, close #964 #1086

Features

• probeType: unify the definition, see details
• observe-image: new plugin to detect img load or not and call refresh method
• slide: support dynamic pages, and slidePageChanged event
• core: change offsetHeight to clientHeight for wrapper element size calculation, set directionLockThreshold to 0