Vue.js 0.12.0 RC2 发布，JavaScript 库

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　　Vue.js 0.12.0 RC2 发布，此版本更新内容如下：

• 　　Support staggering transitions for v-repeat. demo
  　　Simply add a stagger attribute
  
• 　　Support expressions in content selectors. (resolved only once)
  
  
• 　　v-class can now accept an object value. The keys will be used as class names and toggled based on the truthy-ness of the value.
  
• 　　Warnings in debug mode now prints the error stack instead of invoking the debugger statement.
  

其他重要改进

• 　　When v-ref is used together with v-repeat,and the value being repeated on is an Object, the corresponding ref will also be an Object, with its keys pointing to the associated child instances.
  
• 　　Transition cancel hook: you can now use enterCancelled and leaveCancelled hooks to handle a cancelled transition. Functions returned in enter and leave hooks are no longer respected.
  

Bug 修复

　　#887, #892, #893
　　更多内容请看发行说明。

　　此版本现已提供下载：https://github.com/yyx990803/vue/archive/0.12.0-rc2.zip。
　　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。
　　支持的浏览器：https://saucelabs.com/u/vuejs