other / mew-iview

use two box-shadow when focus, and a :after to make focus style looks better

Other ideas are to use :before or :after to create shadow

 Don't tab to disable checkboxes

Checkbox tabindex

Focus on <label> when <input> gets the focus

Checkbox: Tabindex WIP

Radio: Tabindex WIP

This reverts commit 518c639ada3332204e71c342c9eb8f4e05a1daf3.

This reverts commit 4434b3abfbbe97f38c8ccd61e8c5664f1b1120b7.

@xotic750 I update Button code, because just use :focus style can do it, so i removed some event.

Fix travis regression

Remove core-js as no longer required

Re: https://github.com/iview/iview/pull/2839#issuecomment-358236307

Enhancement: Implement browserlist, specifically babel orientated.

Feature: Button tab navigation

Upgrade: babel to babel-cli

Upgrade: babel-preset-es2015 to babel-preset-env

Stay up to date, by using the env preset.

https://babeljs.io/docs/plugins/preset-es2015/

https://babeljs.io/docs/plugins/preset-env/