React v15.0 发布了，原本的 react package 被拆分为 react 及 react-dom 两个
package。其中 react package 中包含 React.createElement、 .createClass、
.Component， .PropTypes， .Children 这些 API，而 react-dom package 中包含
ReactDOM.render、 .unmountComponentAtNode、 .findDOMNode。 此版本你值得关注的一些提升： React now uses loose-envify instead of envify so it installs less transitive dependencies.
@qerub in #6303 Shallow renderer now exposes getMountedInstance().
@glenjamin in #4918 Shallow renderer now returns the rendered output from render().
@simonewebdesign in #5411 React no longer depends on ES5 shams for Object.create and Object.freeze in older environments. It still, however, requires ES5 shims in those environments.
@dgreensp in #4959 React DOM now allows data- attributes with names that start with numbers.
@nLight in #5216 React DOM adds a new suppressContentEditableWarning prop for components like Draft.js that intentionally manage contentEditable children with React.
@mxstbr in #6112 React improves the performance for createClass() on complex specs.
获取： 更多发布相关信息，可以参看这里。 | 
