vue v2.0.0-beta.6 发布了，Vue.js 是构建 Web 界面的 JavaScript 库，提供数据驱动的组件，还有简单灵活的 API，使得 MVVM 更简单。
主要更新内容：
重大更新：
vnode data:
staticAttrsis removed to ensure proper updates in certain edge cases. This change does not affect the static tree optimization. When authoring render functions, just useattrs.
修复：
fix class update edge cases when the new vnode doesn't contain any data
#3329 allow 2 root nodes with v-if and v-else in template
#3334 fix
valuebinding with value of0#3341 fix whitespace preservation inside
<pre>#3354 fix
v-showtransition when the transition component is used inside the child component template#3360 fix patch error when a node with
v-htmlorv-textalso has inner content in template.#3365 fix class merging between multiple nested components sharing the same element
#3367 fix vnode children not evaluated correctly when the children is nested thunk
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