skipValidate used to skip validating when submit

* feat(recycle-list): complete coding

* test(recycle-list): add unit case

* docs(recycle-list): add docs

* test(recycle-list): modify unit case

* feat(recycle-list): remove refs

* test(recycle-list): improve the coverage

* docs(recycle-list): modify destructuring

* docs(recycle-list): modify docs

* feat(recycle-list): adjust css and optimize loadings

* test(recycle-list): modify unit case

* refactor(recycle-list): code review

* refactor(recycle-list): add overflow scrolling touch

* docs(recycle-list): en remove zh-CN doc

* docs(recycle-list): tombstone mode to infinite mode

* fix(scroll): set nestMode default to 'none'

* chore(scroll): update examples

* chore(scroll): update scroll docs

* chore(scroll): update unit test

* fix(scroll): update

#348

* fix(scroll): outer scroll disabled when inner scroll invoke scrollTo

* chore(scroll): fix test bug in nest scroll

* fix(scroll): add 'none' nestMode

* fix(scroll-nav): can not scroll when nav-bar reach boundary

* chore(scroll): update scroll docs