* refactor(input): prepend and append margin style

BREAKING CHANGE: input prepend + input field no margin-left -5px

* feat(input): support blurHidden for clearable prop

#271

* chore(example): input

add clearable blurHidden demo

* test(input): clearable blurHidden test

* feat(input): eye and clearable support deep changes

* test(input): deep watch test

* docs(input): clearable doc

* checkbox&radio: no item background color, but group has background color and moved state classes to root elements

* radio&checkbox: support native style & muti background colors

* update(example): checkbox & radio

* update(test): checkbox & radio tests

* input, select and textarea css style

* update(example): component order

* rate support justify

* support password eye, issue #107

* update input, select and textarea line-height

* update(test): input add pwdEye

* update(test): rate test

* radio format

* nativeStyle to hollowStyle

* update checkbox example

* update(doc): checkbox and radio doc

* input pwdEye support string value

* rate demo & doc

* rate demo & doc

* update(doc): select add picker-show and picker-hide events

* update input doc & demo

* password eye

* upgrade copy-webpack-plugin

* remove scroll useless prop

* input demo

* input demo