upd：优化swiper、uploader组件；fix：修复datepicker组件bug；feat：新增 LazyLoad图片懒加载组件…

…；chore(webpack): 构建环境多入口模式（构建环境支持 doc文档和mobile 示例 同时调试）；热更新配置，公共模块

upd:更新dialog、picker和scroller功能

Merge branch 'master' of https://github.com/jdf2e/nutui

Merge branch 'v2'

Merge branch 'v2'

Merge branch 'v2'

Merge branch 'v2'

Merge branch 'v2'

update

update